Comparison of XFX Radeon RX 5500 XT Thicc II Pro video card vs Colorful GeForce GTX 1660 6G-V video card by specifications and benchmarks. XFX Radeon RX 5500 XT Thicc II Pro runs at 1.607 GHz base clock speed and has 8 GB of GDDR6 memory, while video card Colorful GeForce GTX 1660 6G-V runs at 1.530 GHz base clock speed and has 6 GB of GDDR5 memory. The TDP of the first video card is 130 W, and the second is 120 W. Compare the table of benchmark results to find out which graphic card is better.