Lets face is, the RX480 has 5.8 tflops.
The GTX 1060 has 4 tflops.
BUT the GTX 1060 has in 1440p and 4k, 3% to 10% more fps in every game...
CUDA vs Stream architecture difference, and the fact most game studios are paid by nVidia and are optimized for their hardware.
FLOPS stands for floating point operations per second. If you have instructions that can do more work, then a lower FLOPS and achieve greater result.
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