Comparison of Sapphire Pulse Radeon RX 6800 XT video card vs ZOTAC GeForce GTX 1070 OEM V2 video card by specifications and benchmarks. Sapphire Pulse Radeon RX 6800 XT runs at 1.875 GHz+ 3 % base clock speed and has 16 GB of GDDR6 memory, while video card ZOTAC GeForce GTX 1070 OEM V2 runs at 1.506 GHz base clock speed and has 8 GB of GDDR5 memory. The TDP of the first video card is 300 W, and the second is 150 W. Compare the table of benchmark results to find out which graphic card is better.