Comparison of SAPPHIRE NITRO+ Radeon RX 6700 XT video card vs GALAX GeForce RTX 3090 SG (1-Click OC) video card by specifications and benchmarks. SAPPHIRE NITRO+ 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 260 W+ 13 %, and the second is 420 W+ 20 %. Compare the table of benchmark results to find out which graphic card is better.