Comparison of Sapphire Radeon RX 5700 XT 8G video card vs EVGA GeForce GTX 1660 SUPER SC ULTRA GAMING video card by specifications and benchmarks. Sapphire Radeon RX 5700 XT 8G runs at 1.605 GHz base clock speed and has 8 GB of GDDR6 memory, while video card EVGA GeForce GTX 1660 SUPER SC ULTRA GAMING runs at 1.530 GHz base clock speed and has 6 GB of GDDR6 memory. The TDP of the first video card is 225 W, and the second is 125 W. Compare the table of benchmark results to find out which graphic card is better.