Comparison of XFX Speedster QICK 319 Radeon RX 6750 XT Ultra Gaming video card vs Sapphire Nitro+ Radeon RX 6800 video card by specifications and benchmarks. XFX Speedster QICK 319 Radeon RX 6750 XT Ultra Gaming runs at 2.283 GHz+ 4 % base clock speed and has 12 GB of GDDR6 memory, while video card Sapphire Nitro+ Radeon RX 6800 runs at 1.850 GHz+ 9 % base clock speed and has 16 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.