It is?
GK110 seems to go back and forth between Tahiti in GPGPU benchmarks, and that's at a significant die size advantage. GCN seems like it's at least as good at general purpose tasks architecturally (a theoretical Tahiti scaled up to GK110 proportions would likely thrash GK110 in the majority of GPGPU benchmarks), though Nvidia obviously has a software advantage with CUDA.



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