Comparison of ZOTAC GeForce GTX 1070 AMP Extreme Core video card vs Sapphire Radeon RX 6600 video card by specifications and benchmarks. ZOTAC GeForce GTX 1070 AMP Extreme Core runs at 1.607 GHz+ 7 % base clock speed and has 8 GB of GDDR5 memory, while video card Sapphire Radeon RX 6600 runs at 1.626 GHz base clock speed and has 8 GB of GDDR6 memory. The TDP of the first video card is 250 W+ 67 %, and the second is 132 W. Compare the table of benchmark results to find out which graphic card is better.