Comparison of Sapphire Pulse Radeon RX 6600 video card vs GIGABYTE Radeon RX 6500 XT GAMING OC 4G video card by specifications and benchmarks. Sapphire Pulse Radeon RX 6600 runs at 1.626 GHz base clock speed and has 8 GB of GDDR6 memory, while video card GIGABYTE Radeon RX 6500 XT GAMING OC 4G runs at 2.200 GHz base clock speed and has 4 GB of GDDR6 memory. The TDP of the first video card is 132 W, and the second is 107 W. Compare the table of benchmark results to find out which graphic card is better.