Comparison of Gainward GeForce RTX 2070 Phantom GS video card vs KFA2 GeForce RTX 3080 Ti SG (1-Click OC) video card by specifications and benchmarks. Gainward GeForce RTX 2070 Phantom GS runs at 1.410 GHz base clock speed and has 8 GB of GDDR6 memory, while video card KFA2 GeForce RTX 3080 Ti SG (1-Click OC) runs at 1.365 GHz base clock speed and has 12 GB of GDDR6X memory. The TDP of the first video card is 185 W+ 6 %, and the second is 350 W. Compare the table of benchmark results to find out which graphic card is better.