Comparison of Gainward GeForce RTX 2060 Phoenix GS video card vs KFA2 GeForce RTX 3090 SG (1-Click OC) video card by specifications and benchmarks. Gainward GeForce RTX 2060 Phoenix GS runs at 1.365 GHz base clock speed and has 6 GB of GDDR6 memory, while video card KFA2 GeForce RTX 3090 SG (1-Click OC) runs at 1.395 GHz base clock speed and has 24 GB of GDDR6X memory. The TDP of the first video card is 190 W+ 19 %, and the second is 420 W+ 20 %. Compare the table of benchmark results to find out which graphic card is better.