Comparison of ASRock Radeon RX 5700 XT 8G video card vs ZOTAC GAMING GeForce GTX 1660 SUPER Twin Fan video card by specifications and benchmarks. ASRock Radeon RX 5700 XT 8G runs at 1.605 GHz base clock speed and has 8 GB of GDDR6 memory, while video card ZOTAC GAMING GeForce GTX 1660 SUPER Twin Fan 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.