Comparison of Sapphire Nitro+ Radeon RX 6800 XT SE video card vs GIGABYTE GeForce GTX 1660 D5 6G video card by specifications and benchmarks. Sapphire Nitro+ Radeon RX 6800 XT SE runs at 1.925 GHz+ 5 % base clock speed and has 16 GB of GDDR6 memory, while video card GIGABYTE GeForce GTX 1660 D5 6G runs at 1.530 GHz base clock speed and has 6 GB of GDDR5 memory. The TDP of the first video card is 300 W, and the second is 120 W. Compare the table of benchmark results to find out which graphic card is better.