Comparison of PowerColor Radeon RX 6800 video card vs GIGABYTE Radeon RX 6750 XT GAMING OC 12G video card by specifications and benchmarks. PowerColor Radeon RX 6800 runs at 1.700 GHz base clock speed and has 16 GB of GDDR6 memory, while video card GIGABYTE Radeon RX 6750 XT GAMING OC 12G runs at 2.200 GHz base clock speed and has 12 GB of GDDR6 memory. The TDP of the first video card is 250 W, and the second is 250 W. Compare the table of benchmark results to find out which graphic card is better.