Comparison of Sapphire Nitro+ Radeon RX 5700 XT 8G SE video card vs XFX Speedster QICK308 Radeon RX 6600 XT BLACK Gaming video card by specifications and benchmarks. Sapphire Nitro+ Radeon RX 5700 XT 8G SE runs at 1.840 GHz+ 15 % base clock speed and has 8 GB of GDDR6 memory, while video card XFX Speedster QICK308 Radeon RX 6600 XT BLACK Gaming runs at 2.188 GHz+ 11 % base clock speed and has 8 GB of GDDR6 memory. The TDP of the first video card is 285 W+ 27 %, and the second is 160 W. Compare the table of benchmark results to find out which graphic card is better.