Comparison of Sapphire Nitro+ Radeon RX 6900 XT SE video card vs KFA2 GeForce RTX 3080 SG (1-Click OC) 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 KFA2 GeForce RTX 3080 SG (1-Click OC) runs at 1.440 GHz base clock speed and has 10 GB of GDDR6X memory. The TDP of the first video card is 363 W+ 21 %, and the second is 320 W. Compare the table of benchmark results to find out which graphic card is better.