Comparison of PowerColor Fighter Radeon RX 6700 XT video card vs GALAX GeForce RTX 3090 SG (1-Click OC) video card by specifications and benchmarks. PowerColor Fighter Radeon RX 6700 XT runs at 2.321 GHz base clock speed and has 12 GB of GDDR6 memory, while video card GALAX 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 230 W, and the second is 420 W+ 20 %. Compare the table of benchmark results to find out which graphic card is better.