Comparison of Sapphire Nitro+ Radeon RX 6900 XT SE video card vs EVGA GeForce GTX 1660 SUPER BLACK GAMING video card by specifications and benchmarks. Sapphire Nitro+ Radeon RX 6900 XT SE runs at 1.825 GHz base clock speed and has 16 GB of GDDR6 memory, while video card EVGA GeForce GTX 1660 SUPER BLACK GAMING runs at 1.530 GHz base clock speed and has 6 GB of GDDR6 memory. The TDP of the first video card is 363 W+ 21 %, and the second is 125 W. Compare the table of benchmark results to find out which graphic card is better.