Comparison of SAPPHIRE NITRO+ Radeon RX 6600 XT video card vs ZOTAC GeForce GTX 1070 AMP Extreme video card by specifications and benchmarks. SAPPHIRE NITRO+ Radeon RX 6600 XT runs at 1.968 GHz base clock speed and has 8 GB of GDDR6 memory, while video card ZOTAC GeForce GTX 1070 AMP Extreme runs at 1.632 GHz+ 8 % base clock speed and has 8 GB of GDDR5 memory. The TDP of the first video card is 160 W, and the second is 250 W+ 67 %. Compare the table of benchmark results to find out which graphic card is better.