Radeon R600



Architecture



Unified shaders



The "R600" is the first personal computer graphics processing unit (GPU) from ATI based on a unified shader architecture. It is ATI's second generation unified shader design and is based on the "Xenos" GPU implemented in the Xbox 360 game console, which used the world's first such shader architecture. Previous GPU architectures implement separate processors for each type of graphics function. A unified architecture leverages many flexible processors which can be scheduled to process a variety of shader types, thereby significantly increasing GPU throughput (dependent on application instruction mix as noted below). The R600 core processes vertex, geometry, and pixel shaders as outlined by the Direct3D 10.0 specification for Shader Model 4.0 in addition to full OpenGL 3.0 support.



The new unified shader functionality is based upon a Very long instruction word (VLIW) architecture in which the core executes operations in parallel.



A shader cluster is organized into 5 stream processing units. Each stream processing unit (except the 5th) can retire a finished single precision floating point MAD (or ADD or MUL) instruction per clock, dot product (dp, and special cased by combining ALUs), and integer ADD. The 5th unit is more complex and can additionally handle special transcendental functions such as sine and cosine. Each shader cluster can execute 6 instructions per clock cycle (peak), consisting of 5 shading instructions plus 1 branch .



Notably, the VLIW architecture brings with it some classic challenges inherent to VLIW designs, namely that of maintaining optimal instruction flow.

Additionally, the chip cannot co-issue instructions when one is dependent on the results of the other. Performance of the GPU is highly dependent on the mixture of instructions being used by the application and how well the real-time compiler in the driver can organize said instructions.



R600 core includes 64 shader clusters, while RV610 and RV630 cores have 8 and 24 shader clusters respectively.



See also: Very long instruction word



Hardware tessellation



The GPU is equipped with an extra feature which is not part of the current DirectX 10.0 specification. It contains programmable tessellation units, similar to those within the Xenos GPU (codenamed "C1") also developed by ATI. This unit allows a developer to take a simple polygon mesh and subdivide it based on a curved surface evaluation function, with different tessellation forms as Bzier surfaces with N-patches, B-splines and NURBS, and even some subdivision surface techniques, which usually comes with a displacement map texture. Essentially, this allows a simple, low-polygon model to be increased dramatically in polygon density in real-time with minimized performance loss. Scott Wasson of Tech Report noted during an AMD demo of the technology that the resulting model was so dense with millions of polygons that it appeared to be solid.



This unit is reminiscent of ATI's earlier "TruForm" technology, used initially in the Radeon 8500, which performed a similar function in hardware. While this tessellation hardware is not part of the current OpenGL or Direct3D requirements, and competitors such as the GeForce 8 series lack similar hardware, Microsoft has included Tessellation as part of their D3D10.1 future plans. The "TruForm" technology from the past received little attention from software developers and was only utilized in a few game titles (such as Madden NFL 2004, Serious Sam, Unreal Tournament 2003 and 2004, and unofficially Morrowind), because it was not a feature shared with NVIDIA GPUs which had a competing Tessellation solution using Quintic-RT patches which met with even less support from developers. Since the Xenos contains similar hardware, and Microsoft sees hardware surface tessellation as a major GPU feature with proposed implementation of hardware tessellation support in future DirectX releases (presumably DirectX 11), dedicated hardware tessellation units may receive increased developer awareness in future titles. It remains to be seen whether ATI's implementation will be compatible with the eventual DirectX standard.



Ultra threaded dispatch processor



Although the R600 is a significant departure from previous designs, it still shares many features with its predecessors. The "Ultra-Threaded Dispatch Processor" is a major architectural component of the R600 core, just as it was with the Radeon X1000 GPUs. This processor manages a large number of in-flight threads of three distinct types (vertex, geometry, and pixel shaders) and switches amongst them as needed. With a large number of threads being managed simultaneously it is possible to reorganize thread order to optimally utilize the shaders. In other words, the dispatch processor evaluates what goes in the other parts of the R600 and attempts to keep processing efficiency as high as possible. There are lower levels of "management" as well; each SIMD array of 80 stream processors has its own sequencer and arbiter. The arbiter decides which thread to process next, while the sequencer attempts to reorder instructions for best possible performance within each thread.



Texturing and anti-aliasing



Texturing and final output aboard the R600 core is similar but also distinct from R580. R600 is equipped with 4 texture units that are decoupled (independent) from the shader core, like in the R520 and R580 GPUs.



The render output units (ROPs) of Radeon HD 2000 series now performs the task of multi-sample anti-aliasing (MSAA) with programmable sample grids and maximum of 8 sample points, instead of using pixel shaders as in Radeon X1000 series. Also new is the capability to filter FP16 textures, popular with HDR lighting, at full-speed. ROP can also perform trilinear and anisotropic filtering on all texture formats. On R600, this totals 16 pixels per clock for FP16 textures, while higher precision FP32 textures filter at half-speed (8 pixels per clock).



Anti-aliasing capabilities are more robust on R600 than on the R520 series. In addition to the ability to perform 8x MSAA, up from 6x MSAA on the R300 through R580, R600 has a new "custom filter anti-aliasing" (CFAA) mode. CFAA refers to an implementation of non-box filters that look at pixels around the particular pixel being processed in order to calculate the final color and anti-alias the image. CFAA is performed by shader, instead of in the ROPs. This brings greatly enhanced programmability because the filters can be customized, but may also bring potential performance issues because of the use of shader resources. As of launch of R600, CFAA utilizes wide and narrow tent filters. With these, samples from outside the pixel being processed are weighted linearly based upon their distance from the centroid of that pixel, with the linear function adjusted based on the wide or narrow filter chosen.



Memory controllers



Memory controllers are connected via internal bi-directional ring bus wrapped around the processor. In Radeon HD 2900, it is a 1024-bit bi-directional ring bus (512-bit read and 512-bit write), with 8 64-bit memory channels for a total bus width of 512-bits on the 2900 XT.; in Radeon HD 3800, it is a 512-bit ring bus; in Radeon HD 2600 and HD 3600, it is a 256-bit ring bus; In Radeon HD 2400 and HD 3400, there is no ring bus.



Video processing, display and miscellaneous features



All video cards except the Radeon HD 2900 series include dedicated ATI's Unified Video Decoder for hardware decoding of MPEG4, VC-1, H.264 video streams, which itself being the major part of AVIVO HD technology. In terms of functionality, NVIDIA's Purevideo 2 offer similar hardware video acceleration, with UVD including greater VC-1 offloading.



HDTV encoding support is implemented via the integrated AMD Xilleon encoder; the companion "Rage Theater" chip used on the Radeon X1000 series was replaced with the digital "Theater 200" chip, providing VIVO capabilities.



For display outputs, all variants include two dual-link TMDS transmitters, except for HD 2400 and HD 3400, which include one single and one dual-link TMDS transmitters. Each DVI output includes dual-link HDCP encoder with on-chip decipher key. HDMI was introduced, supporting display resolutions up to 19201080, with integrated HD audio controller with 5.1-channel LPCM and AC3 encoding support. Audio is transmitted via DVI port, with specially designed DVI-to-HDMI dongle for HDMI output that carries both audio and video.



All variants support CrossFireX technology. CrossFire efficiency was improved and shows performance approaching the theoretical maximum of twice the performance of a single card.



While some of the architecture of Radeon HD 2000 family is similar to Xenos, Radeon HD 2000 family does not have embedded DRAM (eDRAM) frame buffer. Xenos' eDRAM is designed tightly around the limited resolutions at which the Xbox 360 operates. Personal computers operate at maximum efficiency at a much wider range of resolutions, which would require a significantly larger amount of eDRAM to be effective.



Half-generation update



Please help improve this section by expanding it. Further information might be found on the talk page. (May 2009)



The series saw a half-generation update with die shrink (55 nm) variants: RV670, RV635 and RV620. All variants support PCI Express 2.0, DirectX 10.1 with Shader Model 4.1 features, dedicated ATI Unified Video Decoder (UVD) for all models and PowerPlay technology for desktop video cards.



Except the Radeon HD 3800 series, all variants supported 2 integrated DisplayPort outputs, supporting 24- and 30-bit displays for resolutions up to 25601600. Each output included 1, 2, or 4 lanes per output, with data rate up to 2.7 Gbps per lane.



ATI claimed that the support of DirectX 10.1 can bring improved performance and processing efficiency with reduced rounding error (0.5 ULP compared with average error 1.0 ULP as tolerable error), better image details and quality, global illumination (a technique used in animated films, and more improvements to consumer gaming systems therefore giving more realistic gaming experience. )



Desktop products



The R600 family is called the Radeon HD 2000 series, with the enthusiast segment being the "Radeon HD 2900 series" which originally comprised the Radeon HD 2900 XT with GDDR3 memory released on May 14, and the higher-clocked GDDR4 version in early July.



The mainstream and budget segment products were the Radeon HD 2600 and Radeon HD 2400 series respectively, both launched June 28, 2007.



Previously there were no HD 2000 series products being offered in the performance segment while ATI used models from the previous generation to address that target market; the situation was not changed until the release of variants of the Radeon HD 2900 series, the Radeon HD 2900 Pro and GT, which filled the gap of the performance market for a short period of time.



Radeon HD 2900



The Radeon HD 2900 series was based on the codenamed R600 GPU, packed 700 million transistors on an 80 nm fabrication process and had a 420mm die size. The Radeon HD 2900 XT was the first graphics card product to implement digital PWM onboard, specifically 7-phase PWM. The first product of the line, the Radeon HD 2900 XT, was launched on May 14, 2007.



The Radeon HD 2900 Pro was clocked lower at 600 MHz core and 800 MHz memory (1600 MHz effective), configured with 512 MiB or 1 GiB (GDDR3/GDDR4) of video memory and the same 512-bit memory controller as the Radeon HD 2900 XT instead of the previously rumored 256-bit memory controller.



The Radeon HD 2900 GT was a 48-shader cluster variant clocked the same as the HD 2900 Pro with 256 MB of video memory on a 256-bit interface.



Radeon HD 2600



The Radeon HD 2600 series was based on the codenamed RV630 GPU and packed 390 million transistors on a 65 nm fabrication process. The Radeon HD 2600-series video cards included GDDR3 support, a 128-bit memory ring bus and 4-phase digital PWM, spanning a die size of 153 mm. Neither of the GDDR3 reference PCI-E designs required additional power connectors whereas the HD 2600 Pro and XT AGP variants required additional power through either 4-pin or 6-pin power connectors. Official claims state that the Radeon HD 2600 series consumes as little as 45 W of power.[citation needed]



Radeon HD 2600 X2



The Radeon HD 2600 X2 is a dual-GPU product which includes 2 RV630 cores onto a single PCB with a PCI-E bridge splitting the PCI-E x16 bandwidth into two groups of PCI-E x8 lanes (each 2.0 Gb/s). The card provides 4 DVI outputs or HDMI outputs via dongle and supports CrossFire configurations. AMD calls this product the "Radeon HD 2600 X2" as seen by some vendors and as observed inside the INF file of Catalyst 7.9 version 8.411. Sapphire and other vendors including PowerColor and GeCube have either announced or demonstrated their respective "CrossFire on a card" products. Catalyst 7.9 added support for this hardware in September 2007. However, AMD did not provide much publicity to promote it. A vendor may offer cards containing 256 MB, 512 MB, or 1 GB of video memory. Although the memory technology utilized is at a vendor's discretion, most vendors have opted for GDDR3 and DDR2 due to lower manufacturing cost and positioning of this product for the mainstream rather than performance market segment.



Radeon HD 2400



The Radeon HD 2400 series was based on the codenamed RV610 GPU. It had 180 million transistors on a 65 nm fabrication process. The Radeon HD 2400 series used a 64-bit-wide memory bus. The die size is 85 mm. The official PCB design implements only a passive-cooling heatsink instead of a fan, and official claims of power consumption are as little as 35 W.[citation needed] The core has 16 KB unified vertex/texture cache away from dedicated vertex cache and L1/L2 texture cache used in higher end model.



Reports has that the first batch of the RV610 core (silicon revision A12), only being released to system builders, has a bug that hindered the UVD from working properly, but other parts of the die operated normally. Those products were officially supported with the release of Catalyst 7.10 driver, which the cards were named as Radeon HD 2350 series.



Radeon HD 3800



The Radeon HD 3800 series was based on the codenamed RV670 GPU, packed 666 million transistors on a 55 nm fabrication process and had a die size at 192 mm, with the same 64 shader clusters as the R600 core, but the memory bus width was reduced to 256 bits.



The RV670 GPU is also the base of the FireStream 9170 stream processor, which uses the GPU to perform general purpose floating-point calculations which were done in the CPU previously.



The Radeon HD 3850 and 3870 became available mid-November 2007.



Radeon HD 3690/3830



The Radeon HD 3690, which was limited only to the Chinese market where it was named HD 3830, has the same core as the Radeon 3800 series but with only a 128-bit memory controller and 256MB of GDDR3 memory. All other hardware specifications are retained.



A further announcement was made that there would be a Radeon HD 3830 variant bearing the same features as Radeon HD 3690, but with a unique device ID that does not allow add-in card partners in China to re-enable the burnt-out portion of the GPU core for more memory bandwidth.



The Radeon HD 3690 was released early February 2008 for the Chinese market only.



Radeon HD 3800 X2



Radeon HD 3870 X2



Radeon HD 3870 X2 (codenamed R680) was released on January 28, 2008, featuring 2 RV670 cores with a maximum of 1024 MB GDDR3 SDRAM, targeting the enthusiast market and replacing the Radeon HD 2900 XT. The processor achieved a peak single-precision floating point performance of just over 1 TFLOPS (1.06 TFLOPS), being the world's first single-PCB graphics product breaking the 1 TFLOP mark.



The Radeon HD 3870 X2 uses the same approach for communications between the two GPU cores as the Sapphire Radeon X1950 Pro Dual and Radeon HD 2600 X2. The GPU cores communicate to each other through an onboard PCI-E switch, providing each core with x8 (Radeon X1950 Pro Dual) to x16 (Radeon HD 2600 X2) PCI-E bandwidth and becoming a software CrossFire setup, supporting two extra hardware CrossFire bridges. The Radeon HD 3870 X2 uses PEX8547 PCI-E switch,, but each core shares x16 PCI-E bandwidth. The card only sees one CrossFire bridge being placed onboard and between the cores, thus only allowing one CrossFire bridge to be plugged onto the card.



AMD stated the possibility of supporting 4 Radeon HD 3870 X2 cards, allowing 8 GPUs to be used on several motherboards, including the MSI K9A2 Platinum and Intel D5400XS, because these motherboards have sufficient spaces between PCI-E slots for dual-slot cooler video cards, presumably as a combination of two separate hardware CrossFire setups with a software CrossFire setup bridging the two, but currently with no driver support.



Radeon HD 3600



The Radeon HD 3600 series was based on the codenamed RV635 GPU, packed 378 million transistors on 55 nm fabrication process, and had 128-bit memory bus width. The support for HDMI and D-Sub ports is also achieved through separate dongles. Beside the DisplayPort implementations, there also exists other display output layouts as dual DVI port or DVI with D-Sub display output layout.



The only variant, the Radeon HD 3650, was released on January 23, 2008.



Radeon HD 3400



AMD Radeon HD3450



The Radeon HD 3400 series was based on the codenamed RV620 GPU, packed 181 million transistors on a 55 nm fabrication process, and had 64-bit memory bus width. Products were available in full height ATX cards and low-profile cards.



One of the notable features is that the Radeon HD 3400 series (including Mobility Radeon HD 3400 series) video cards support ATI Hybrid Graphics.



The Radeon HD 3450 and Radeon HD 3470 were released on January 23, 2008.



Mobile products



All Mobility Radeon HD 2000/3000 series share the same feature set support as their desktop counterparts, as well as the addition of the battery-conserving PowerPlay 7.0 features, which are augmented from the previous generation's PowerPlay 6.0.



The Mobility Radeon HD 2300 is a budget product which includes UVD "in silica" but lacks unified shader architecture and DirectX 10.0 / SM 4.0 support, limiting support to DirectX 9.0c / SM 3.0 using the more traditional architecture of the previous generation. A high-end variant, the Mobility Radeon HD 2700, with higher core and memory frequencies than the Mobility Radeon HD 2600, was released in mid-December 2007.



The Mobility Radeon HD 2400 is offered in two model variants; the standard HD 2400 and the HD 2400 XT.



The Mobility Radeon HD 2600 is also available in the same two flavors; the plain HD 2600 and, at the top of the mobility lineup, the HD 2600 XT.



The half-generation update treatment had also applied to mobile products. Announced prior to CES 2008 was the Mobility Radeon HD 3000 series. Released in the first quarter of 2008, the Mobility Radeon HD 3000 series consisted of two families, the Mobility Radeon HD 3400 series and the Mobility Radeon HD 3600 series. The Mobility Radeon HD 3600 series also featured the industry's first implementation of on-board 128-bit GDDR4 memory.



About the time of late March to early April, 2008, AMD renewed the device ID list on its website with the inclusion of Mobility Radeon HD 3850 X2 and Mobility Radeon HD 3870 X2 and their respective device IDs. Later in Spring IDF 2008 held in Shanghai, a development board of the Mobility Radeon HD 3870 X2 was demonstrated alongside a Centrino 2 platform demonstration system. The Mobility Radeon HD 3870 X2 was based on two M88 GPUs with the addition of a PCI Express switch chip on a single PCB. The demonstrated development board is on PCI Express 2.0 x16 bus, while the final product is expected to be on AXIOM/MXM modules.



Driver support



Main article: ATI Catalyst Drivers



Windows



The Purple Pill tool issue, which could allow unsigned drivers to be loaded into Windows Vista and tamper with the operating system kernel, was resolved in the Catalyst 7.8 release (version 8.401). The AVIVO video converter for Windows Vista, and color temperature control in Catalyst Control Center was added with the release of Catalyst 7.9, package version 8.411. Software CrossFire was enabled for HD 2600 and HD 2400 series video cards with the release of Catalyst 7.10 (package version 8.421)



The Catalyst 8.1, package version 8.451, supports for MultiView technology for accelerated OpenGL rendering on multiple video card setup (CrossFire). The driver also allows CrossFire configurations for Radeon HD 3850 and HD 3870 video cards.



The Catalyst 8.3 is described by AMD as a milestone release, supporting DirectX 10.1, ATI CrossFire X technology and allowing the mixing of different Radeon HD 3800 series video cards to form a CrossFire X setup with 2 to 4 GPUs. Catalyst 8.3 introduced to new video controls to further enhance the video playback quality, these controls includes edge enhancement and noise reduction settings. There is also the support for extended desktop in CrossFire X mode. The anti-aliasing support for Unreal Engine 3.0 in DirectX 9.0 games, support for CFAA filters (wide tent and box tent) to be enabled when Super AA is enabled, and other features as developer support for Hardware surface tessellation, hardware accelerated wide aspect ratio LCD scaling, HydraVision support for Windows Vista allowing to add maximum 9 virtual desktops and new Folding@Home client (version 6.10) are also officially supported in this release.



The Catalyst 8.5, package version 8.493 brought new features include component video with 480i and 480p resolutions, SECAM TV output support, 1080p HDTV custom mode via HDMI, 1080p24 (1080p resolution at 24 frame/s) support, HDMI Audio for non-standard TV modes (CEA 861b), support for adaptive anti-aliasing under OpenGL, Windows XP SP3 support and un-install utility enhancements. The driver also includes performance improvements and fixes some instability issues and rendering issues on some games.



It should be note that current Catalyst drivers do not support the AGP versions of Radeon HD 2000/3000 series cards with RIALTO bridge. Installing Catalyst drivers on those cards will yield the following error message: "setup did not find a driver compatible with your current hardware or operating system." or simply fail outright. The AGP cards in question are supported unofficially by ATI/AMD with a "hotfixed" Catalyst driver-set each month since May 2008 with the Catalyst 8.5 hotfix . Their PCI vendor IDs are listed below:



GPU core



Product



PCI device ID



RV610



Radeon HD 2400 Pro



94C4



RV620 (M82SE)



Radeon HD 3430



95C2



RV620



Radeon HD 3450



94C6



RV630



Radeon HD 2600 Pro



9587



RV630



Radeon HD 2600 XT



9586



Linux



Please help improve this section by expanding it. Further information might be found on the talk page. (June 2008)



The official closed-source ATI Linux driver was named fglrx, then renamed as Catalyst drivers for Linux, currently version 9.12. In the past there was no support for the AGP versions of the HD 2400 and HD 2600, but support was added in version 8.5 of fglrx.



Another Linux driver is the RadeonHD driver, an open-source ATI R500/600 display driver, it is developed in part by specifications that AMD has openly published. To date, AMD has released register specifications for M56, M76, RV630 and RS690 GPUs and 3D programming guide for the R500 family of GPUs. AMD has committed to releasing their R500 and R600 GPU documentation along with publishing their specifications for past generations of GPUs.



Documentation release



AMD committed to releasing register documentations for each generations of GPU to support the open source community and an open source driver RadeonHD for Linux. Initial register documentation and parser code to execute the AtomBIOS ROM routines were released in September 2007. The R600 family Instruction Set Architecture guide was released on June 11, 2008. Sample code and register headers for the R600 and R700 3D engines were released in December 2008. AMD released the specifications for both the r6xx and r7xx families on January 26, 2009.



Marketing



New model numbering scheme



The numbering schemes for Radeon HD 3000 series as well as Mobility Radeon HD 3000 series were notably changed. While previous PRO, XT, GT, and XTX suffixes were eliminated, products were differentiated by changing the last two digits of the product model number (for instance, HD 3850 and HD 3870, giving the impression that the HD 3870 model having higher performance than HD 3850). While for dual-GPU products, a new suffix "X2" will be used to identify its nature as dual-GPU on one PCB solution. Similar changes to the IGP naming were spotted as well, for the previously launched AMD M690T chipset with side-port memory, the IGP is named "Radeon X1270", while for the AMD 690G chipset, the IGP is named "Radeon X1250", as for AMD 690V chipset, the IGP is clocked lower and having fewer functions and thus named "Radeon X1200". The new numbering scheme of video products are shown below:



Product Category



Model number



range (steps of 10)1



Price range



(USD)



Shader amount



(VS/PS/SPU)2



Memory



Outputs



Product(s)



Type



Width



(bit)



Size (MiB)



Enthusiast



Dual GPU



800 X2-990 X23



>$ 250



200%



GDDR3,



GDDR4



2x 256-bit



512/1024



2 DVI,



HDMI, DP (Dongle)



HD 3870 X2/HD 3850 X2



Enthusiast



/high-end



800-990



>$ 150



75-100%



GDDR3,



GDDR4



256-bit



256/512/1024



2 DVI,



HDMI, DP (Dongle)



HD 3870/3850



Mainstream



600-790



$ 100$ 150



37.5-75%



DDR2,



GDDR3,



GDDR4



128-bit



128/256/512



D-Sub, DVI



HD 3650/3690



DVI, 2 DP,



HDMI (Dongle)



Budget/Value



350-590





25-50%



DDR2,



GDDR3



64-bit



64/128



(HM: 768/1024)



D-Sub, DVI,



HDMI, DP (Dongle)



HD 3450/3470



IGP



000-300



N/A



25-50%



UMA,



side-port memory



(GDDR2/GDDR3)



UMA + 32-bit



(side-port) 4



64/1284 + UMA



(OS dependent)



D-Sub, DVI,



HDMI, DP



Component (YCbCr)



X1270/X1250/X1200



HD 3200/HD 3100/2100



1 The last two digits denotes variant, similar to the previous suffixes, which "70" is in essence the "XT" variant while "50" is actually the "Pro" variant , while "90" appeared once in the lineup and can be seen as the "XTX" variant.



2 Stream Processors only applicable to Direct3D 10-class video components (Radeon HD 2000/3000 series).



3 All Dual-GPU solutions will have an X2 suffix after the model number.



4 Side-port memory as local frame buffer is only available on selected IGP models, not all IGP models have this feature.



Product confusions



When Radeon HD 2900 was first released, there was much confusion as to whether or not the product included dedicated video processor hardware, due in part to statements that it supported the software program AVIVO HD. Many reviewers and subsequent readers/consumers interpreted this as meaning the HD2900 incorporated the same UVD hardware as found in the HD 2400 & HD 2600 series, despite some sites noting this difference at launch time, weeks before the issue first gained traction as a result of a TechReport article. This confusion and subsequent discussions prompted AMD to make a formal statement designed to clarify exactly what UVD was available in which models. The HD 2900 XT video playback capabilities are similar to those of the previous X1000 cards with AVIVO capabilities.



Starting August, 2007 some system builders including Falcon Northwest received the 1 GB GDDR4 (with Samsung 0.9 ns (K4U52324QE-BC09) GDDR4) version of the Radeon HD 2900 XT. Falcon Northwest incorrectly referred the product as the "Radeon HD 2900 XTX".



It should be noted that several products, branded the Mobility Radeon X2000 series, are in fact based on the older R520 architecture and spotting the support of DirectX 9.0c only and do not have UVD on die.



Chipset table



Main article: Comparison of ATI Graphics Processing Units



See also



Video card



Graphics processing unit



GeForce 8 series



FireStream 9170, the GPGPU version of Radeon HD 3870 graphics card



References



^ AMD OpenGL 3.0 driver release on Jan 28, 2009



^ a b c d e f g h i j k Wasson, Scott. AMD Radeon HD 2900 XT graphics processor: R600 revealed, Tech Report, May 14, 2007



^ a b c d e f Beyond3D review: AMD R600 Architecture and GPU Analysis, retrieved June 2, 2007.



^ a b ExtremeTech review



^ Witheiler, Matthew. ATi TRUFORM Technology - Powering the next generation Radeon, AnandTech, May 29, 2001.



^ a b The Future of DirectX presentation, slide 24-29



^ nVidia GeForce3 SDK WhitePaper



^ DailyTech report, retrieved December 7, 2007



^ Wilson, Derek. ATI Radeon HD 2900 XT: Calling a Spade a Spade: Multi-GPU Performance - Prey, AnandTech, May 14, 2007.



^ "RV670 Cards & Specs Revealed". VR-Zone. August 22, 2007. http://www.vr-zone.com/articles/HD_2950Pro_(RV670)_Cards_&_Specs_Revealed/5181.html. 



^ (Spanish) MadboxPC coverage, retrieved November 10, 2007



^ ATI DirectX 10.1 whitepaper, retrieved December 7, 2007



^ HD2400 & HD2600 Press release



^ Beyond3D R600 review, retrieved September 25, 2007



^ Kowaliski, Cyril (2007-09-25). "AMD launches the $ 249 Radeon HD 2900 Pro". The Tech Report. http://www.techreport.com/discussions.x/13267. Retrieved 2007-09-26. 



^ a b AMD official press release



^ Beyond3D RV630 chip reference, retrieved September 25, 2007



^ Sapphire HD2K Product Matrix



^ Beyond3D report, retrieved September 13, 2007



^ Beyond3D RV610 chip reference, retrieved September 25, 2007



^ Fudzilla report, retrieved October 31, 2007



^ a b (Spanish) MadboxPC thread, retrieved November 10, 2007



^



^ Hexus.net review, retrieved January 30, 2007



^ Fudzilla review, retrieved December 7, 2007



^ PEX8547 product brief, retrieved January 22, 2008



^ Hexus.net image, retrieved January 30, 2008



^ Fudzilla report, retrieved November 27, 2007



^ AMD official low-profile design with DisplayPort, retrieved January 23, 2008



^ (Japanese)PC Watch report, retrieved January 23, 2008



^ Mobility Radeon HD 2400 specifications and Mobility Radeon HD 2400 XT specifications



^ HD 2600 specifications and HD 2600 XT specifications



^ ATI Vendor ID page



^ Hexus.net report: Welcome to the world's fastest laptop, brought to you by Intel and ATI, retrieved April 8, 2008



^ DailyTech report



^ The Inquirer report



^ Fudzilla review, retrieved February 15, 2008



^ Legit Reviews review, retrieved February 15, 2008



^ Catalyst 8.3 release notes, retrieved March 5, 2008



^ Catalyst 8.4 release notes, retrieved April 17, 2008



^ AGP issue on AMD support page



^ guru3D discussion thread



^ Linux Catalyst 8.5 release notes



^ AMD Developer Central - Developer Guides and Manuals, retrieved September 30, 2008



^ Phoronix report



^ Advanced Micro Devices, Inc. R600-Family Instruction Set Architecture, X.org website, June 11, 2008.



^ Advanced Micro Devices, Inc. Radeon R6xx/R7xx 3D Register Reference Guide, X.org website, January 26, 2009.



^ "RV670 is Radeon HD 3800 Series". VR-Zone. October 17, 2007. http://www.vr-zone.com/articles/RV670_is_Radeon_HD_3800_Series/5358.html#Scene_1. 



^ EliteBastards' HD2000 preview, retrieved July 23, 2007.



^ TechReport UVD article



^ AMD press release, the third paragraph.



AMD also wishes to clarify any confusion that may exist regarding the presence of the Unified Video Decoder (UVD) in its ATI Radeon HD 2000 series graphics processors. UVD is present in the ATI Mobility Radeon HD 2300, the ATI Radeon HD 2400, and the ATI Radeon HD 2600 series products, but is not present in the ATI Radeon HD 2900 series products as it is not needed due to the usage model of this high end product.



 



AMD Press release



^ Huynh, Anh T. & Kubicki, Kristopher. Whoops, ATI Radeon HD 2900 XT Lacks UVD, DailyTech, May 25, 2007.



^ Falcon Northwest President Blog on 1 GB GDDR4 2900 XT



External links



ATI Radeon HD 2000 Series



ATI Radeon HD 3000 Series



ATI Mobility Radeon HD 2000 Series



ATI Mobility Radeon HD 3000 Series



v d e



AMD graphics products (ATI Technologies)



 



ATI consumer graphics processors



2D rendering



Direct3D 3-6



Direct3D 7



Direct3D 8



Direct3D 9



Direct3D 10



Direct3D 11



Mach



Rage



Radeon R100



Radeon R200



Radeon R300  R420  R520



Radeon R600  R700



Evergreen  Northern Islands1



 



Chipsets



ATI chipsets



AMD chipsets



IGP 300 series / RX380  Radeon Xpress 200  CrossFire Xpress 3200  Radeon Xpress 1250



480X / 570X / 580X  690 Series  7-Series  8-Series



 



Other ATI products and technologies



Multi-GPU



ATI Multi Rendering  CrossFire X



GPU technologies



TruForm  HyperMemory  HyperZ  PowerPlay  AVIVO  ATI Hybrid Graphics  XGP



Workstations and HPC



FireGL  FireMV  FirePro 3D  FireStream (Close to Metal)



Drivers and software



Catalyst  fglrx (Linux)  Hydravision  HLSL2GLSL



Multimedia and handheld



All-in-Wonder  Imageon2  Xilleon2



Video game console GPU



Flipper (GameCube)  Xenos (Xbox 360)  Hollywood (Wii)



1 Upcoming product.



2 Discontinued product.



Categories: ATI Technologies productsHidden categories: Articles to be expanded from May 2009 | All articles to be expanded | All articles with unsourced statements | Articles with unsourced statements from July 2007 | Articles with unsourced statements from March 2008 | Articles to be expanded from June 2008

I am China Manufacturers writer, reports some information about silicon nitride powder , emulsion paint.

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Photography Tips That You Should Try Today!

Move in closer to your subject. When you spot something you'd like to take a picture of, snap a shot. Then move in closer and take a better shot. If you have your subject fill the frame, it will help the viewer appreciate and understand your photo. When taking the picture, continue to move closer until you are sure your picture will represent the subject. Now that you have some many opportunities to share your photos, you might as well make the most of it! Beautiful photos are a great way to stay connected to loved ones even when they're far away. Now that you've read this article, you know plenty of things you can do to make your photographs gorgeous. Be creative when composing your shots. Photography is all about the visual effect of your shots. If it's a mundane item in a cluttered background, chances are good that no one will care to look at your photo. Learn how to create a good photo, and then take those skills Start Reading Way More Start Reading Way More

Anyone may want to become familiar with – Things You Need To Do If You’ve Been Injured

It is always best to remain as silent as you can regarding your accident so that you do not accidentally incriminate yourself. After you've become injured, it is better to keep quite. If medical help is called, tell them just what hurts and how you got the injury. Also be sure to answer any questions about your medical history. You want to be safe, after all. The less things you say, then the less it could be used against your cause. Realize that you can choose a different lawyer if you feel the need when you're appealing a verdict. There are times where getting a fresh legal mind can give you the advantage you need to come out victorious.Organize all your medical records in one handy spot. These should include any notes from doctors, payment receipts and instructions for care. Save all emails from your doctor about your injury. You don't have to spill your guts and tell everything you know just because you are honest Start Reading Way More

My personal Perspective – Important Information You Need To Know About Laptops

Are you only using a laptop for checking emails and going around the internet? Perhaps you might want to think about a Chromebook. The laptops offered by Google use a simple storage procedure and operate on a light operating system. However, the browser experience is rich, and performance and speed are superior. In addition, they can be quite affordable. You can sometimes find them under $300.To keep someone from swiping your laptop while you are traveling through a busy airport or train station, carry it in a larger, padded briefcase with other items. This makes your laptop less of a target; even if people guess you are probably carrying a laptop in that rolling case, it is harder to run off with. Think about the amount of hard drive space you need when looking for a laptop. Like standard computers, the hard drive will hold all your files and information. It it gets full, you'll need to replace it, or use an external Start Reading Way More

You actually might need to know – Lose The Pounds With These Handy Tips

Weight fluctuates naturally for everyone, so don't worry. Understand the direction your weight loss is taking rather than the number that shows up on the scale each day. Consider yourself as doing just fine, so long as the overall number steadily drops. Take the "before" picture so you can see your progress. This will keep you motivated; when you lose the weight it will feel great to look back be able to see how much you changed. Before photos may also inspire others to live a healthier lifestyle.Lose weight with delicious dip. If you like to have dip with your fruits and vegetables, there is a better alternative to prepackaged dips. Applesauce makes delicious and healthy dip. It is versatile and will not sway you from you weight loss goals. It is particularly tasty with bananas and melons.It can be difficult to lose weight. It is not uncommon to show steady weight loss progress before you seem to hit a wall. Sometimes, Start Reading Way More

The Kin Paved the Way for the Smartphone

The kin was a phone made by microsoft that was branded a feature phone, they intended for it to be used with social netowrking and it was used for just that. Unfortunantely this phone is no longer in service and the fact that anyone ever found it useful was quite baffling. It was filled to the brim with various drm's, yet the critics kept saying that it was paving the way to the future. Turns out they were right and it truly was paving the way to the future and that future was smartphones, it had integrated things such as facebook and yahoo email into it, which is essentially an early version of what smart phones were offering. But they did not call themselves a smart phone for they wanted it to be known these were inteded for social networking. They featured a full qwerty keyboard and it was a pretty hi tech phone for its time. Start Reading Way More

Learn Everything You Should Know About Traditional chinese medicine

If you are looking for an acupuncturist near you, try asking around for recommendations. You can ask friends, family, coworkers, etc. If any of them get acupuncture treatments or have in the past, try asking them who did it, what it was like and if they would recommend them to you. It is usually better to get acupuncturist referrals from people you trust than calling about someone in a printed ad. If you are thinking about acupuncture but don't want to get anywhere near needles, ask about laser acupuncture. This method uses laser light to apply pressure to body points, so there is no need for needles. There is no pain and a lot of people find this way effective.Are you considering signing up for your first acupuncture appointment? If you are, then you are likely wanting to make sure you know a little more about this procedure before you follow through. Keep reading to learn more about acupuncture so that you know Start Reading Way More

Correctly Select A Reliable Plumber In Your City

If you have a shower head that needs replacing, be sure to get one that is good quality. Many times people try to save money and buy the cheapest one that they see. The problem with doing that is the cheaper shower heads are not known to be sturdy, and they tend to break easier. If you notice water pooling around the water heater, shut off your water valves right away. If you don't, that small leak could become a big leak that can be hard to shut off. A great way to knock out your plumbing issues in one shot is to schedule everything at once. By doing so, you can save up enough money to pay for the repairs. Most plumbers charge an hourly fee that can be minimized if there is only one visit to your home. People are often hesitant to begin home plumbing jobs because they feel they could end up making the situation much worse. Luckily, there is an easy solution to avoid a disaster. Knowing where the shutoff valve is Start Reading Way More

Superiority Tricks To Start Your Home Business

Start out by advertising your home based business online. Make sure your webpage is one that is user friendly. Make the content on your site useful. Give your customers the ability to purchase products from you online and to remain in touch with you. Before beginning, you should research what is involved in creating a website, such as how to utilize search engine optimization (SEO) practices. If you have a home business, expect lots of phone calls. You'll need to spend some money on a second phone line to handle your business traffic. You can always turn off the ringer on the phone if you are not available to take calls. Every time you spend money on things for your home business, write it down. These records are your source for tax information at filing, and as a safeguard in the event of an audit.Plan a work schedule and stick to it. To avoid doing too much work and getting burned out, distinguish times when you're Start Reading Way More

Good Reliable Advice About Baseball That You Can Use

Be sure to make plenty of time to practice your football playing skills. The more time you spend practicing the better your skills will become. As you have likely heard many times in your life, practice makes perfect. If you want to be the best you need to put in the time. Playing on a football team will build relationships that can last a lifetime. Foster these relationships and learn from your experience on the field and off the field. Football teaches many valuable life lessons. Learn from them and use them in your life to become a healthy and happy adult. Football is a wonderful sport that has grown by leaps and bounds all over the world due to its popularity on television. If you are curious as to what makes football much fun to watch, then you will want to read the following the article. Read on for great football tips that will get you excited about the sport. Always take the time to stretch all of your muscles Start Reading Way More
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