GPU Tech: NVIDIA Talks Fermi, Unveils Nexus
So that's 16 times 32...carry the four...
"Computational GPU" is short-hand for "a whole lot of number crunching". Where NVIDIA's G80 packed 128 cores and the GT200 raised the bar to 240, a full-scale Fermi implementation will pack 512 processor cores, ECC memory protection, and up to 8x the double-precision floating point throughput of its predecessor. Peak number-crunching power has increased all the way around; Fermi can execute 64-bit FP code at 50% the speed of 32-bit FP code, as compared to 12.5 percent the speed of 32-bit FP in earlier product iterations.