Comparison of GIGABYTE Radeon RX 5700 XT 8G video card vs XFX Speedster QICK308 Radeon RX 6600 XT BLACK Gaming video card by specifications and benchmarks. GIGABYTE Radeon RX 5700 XT 8G runs at 1.605 GHz 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 225 W, and the second is 160 W. Compare the table of benchmark results to find out which graphic card is better.