Comparison of XFX Radeon RX 6800 XT video card vs GALAX GeForce RTX 3080 12GB SG (1-Click OC) LHR video card by specifications and benchmarks. XFX Radeon RX 6800 XT runs at 1.825 GHz base clock speed and has 16 GB of GDDR6 memory, while video card GALAX GeForce RTX 3080 12GB SG (1-Click OC) LHR runs at 1.260 GHz base clock speed and has 12 GB of GDDR6X memory. The TDP of the first video card is 300 W, and the second is 350 W. Compare the table of benchmark results to find out which graphic card is better.