Comparison of XFX Speedster MERC 319 Radeon RX 6700 XT Black Gaming video card vs Gainward GeForce RTX 3080 Phantom V1 LHR video card by specifications and benchmarks. XFX Speedster MERC 319 Radeon RX 6700 XT Black Gaming runs at 2.457 GHz+ 6 % base clock speed and has 12 GB of GDDR6 memory, while video card Gainward GeForce RTX 3080 Phantom V1 LHR runs at 1.440 GHz base clock speed and has 10 GB of GDDR6X memory. The TDP of the first video card is 211 W-8 %, and the second is 340 W+ 6 %. Compare the table of benchmark results to find out which graphic card is better.