Comparison of Sapphire Nitro+ Radeon RX Vega 64 video card vs ZOTAC GeForce GTX 1070 AMP Extreme video card by specifications and benchmarks. Sapphire Nitro+ Radeon RX Vega 64 runs at 1.373 GHz+ 10 % base clock speed and has 8 GB of HBM2 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 295 W, and the second is 250 W+ 67 %. Compare the table of benchmark results to find out which graphic card is better.