Sourse1: http://en.wikipedia.org/wiki/Norther...s_(GPU_family) - Sourse2: http://en.wikipedia.org/wiki/GeForce_400_Series - Sourse3: http://en.wikipedia.org/wiki/GeForce_500_Series - Look at the gtx400 wiki under the history: Fermi has double precision, half the single precision. Radeon has 1/4(vliw4) or 1/5(vliw5). - Look at the gtx500 wiki: gtx580 has 1.6Tflops "estimated 64bit-FMA2 power". But we want the final 32bit-FMA3 power, so we multiply by 3(64bit-DualIssue=2*32bit)(FMA3=3ops when FMA2=2). If you see gtx400 wiki under the products: FMA3 has estimations for 2.5 and 2.7ops when the diagram has only count the base 2ops(FMA2). So true gtx580 power=4.7Tflops when Radeon6970=2.7Tflops. Thats 75% faster for gtx580. Prove: http://www.anandtech.com/bench/Product/305?vs=292 - See that in the new Unigine (Heavy Tessellation Mode) gtx580=40%faster than Radeon6970. In DX11(high)=2x faster!!! And a real benchmark: h264 transcode= 75% faster (said so). Games are not good bench because multi-sampling is cheat and because there is not only FPS but FPS*Image Quality, and gtx580 has better FX that apply even in 3Dmark. - So how Radeon7000 with 35% better math (from 6970), can win gtx580??? And how can win a gtx600 that is 5times faster than gtx580: http://en.wikipedia.org/wiki/Compari...rce_600_Series ??? - Finlay VLIW has nothing to do with multiply. Vliw executes operations in parallel, based on a fixed schedule determined when programs are compiled, by a more complex compiler. So Vliw4 means that a vector register is 128bit and executes 4*32bit objects (Amd called those objects: stream processors). - Also Amd wont work for Linux: Many game crush when 3D starts (like CSS). Many have pure FPS due to pure Radeon D3D to OGL translations. Techs like Physics and CG wont work on GPU (only on CPU, so PCSX2 will run with 20fps on a Dual-SSSE3-@3ghz). Video acceleration does not do anything important, wille video transcoding practically don't exist (OpenCL expensive transcoders have bad quality, when Mediacoder-Cuda rocks), so I remember a friends phrase: "A bad h264 transcoder has less quality than a good Mpeg2".
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AMD's HD7970 is ready for action! The most effiency and fastest card on earth.