Comparison of Sapphire Radeon RX 5700 8G video card vs Gainward GeForce GTX 1080 Ti GS video card by specifications and benchmarks. Sapphire Radeon RX 5700 8G runs at 1.465 GHz base clock speed and has 8 GB of GDDR6 memory, while video card Gainward GeForce GTX 1080 Ti GS runs at 1.506 GHz+ 2 % base clock speed and has 11 GB of GDDR5X memory. The TDP of the first video card is 180 W, and the second is 250 W. Compare the table of benchmark results to find out which graphic card is better.