Comparison of ASRock Radeon RX 6900 XT OC Formula 16GB video card vs Gainward GeForce GTX 1070 Phoenix GS video card by specifications and benchmarks. ASRock Radeon RX 6900 XT OC Formula 16GB runs at 2.125 GHz+ 16 % base clock speed and has 16 GB of GDDR6 memory, while video card Gainward GeForce GTX 1070 Phoenix GS runs at 1.632 GHz+ 8 % 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.