Comparison of Sapphire Nitro+ Radeon RX 5700 XT 8G video card vs ZOTAC GAMING GeForce GTX 1660 6GB GDDR5 video card by specifications and benchmarks. Sapphire Nitro+ Radeon RX 5700 XT 8G runs at 1.770 GHz+ 10 % base clock speed and has 8 GB of GDDR6 memory, while video card ZOTAC GAMING GeForce GTX 1660 6GB GDDR5 runs at 1.530 GHz base clock speed and has 6 GB of GDDR5 memory. The TDP of the first video card is 265 W+ 18 %, and the second is 120 W. Compare the table of benchmark results to find out which graphic card is better.