Comparison of PowerColor Red Devil Radeon RX 6750 XT 12GB video card vs MSI Radeon RX 6800 video card by specs and benchmarks. PowerColor Red Devil Radeon RX 6750 XT 12GB runs at 2.200 GHz base clock speed and has 12 GB of GDDR6 memory, while video card MSI Radeon RX 6800 runs at 2.200 GHz base clock speed and has 16 GB of GDDR6 memory. The weight is different, -- vs 1395 g. The TDP of the first video card is 250 W, and the second is 250 W . Compare the benchmark results to find out which video card is better.