Comparison of GIGABYTE Radeon RX 6600 XT Gaming OC 8G video card vs ASUS TUF Gaming GeForce GTX 1660 video card by specifications and benchmarks. GIGABYTE Radeon RX 6600 XT Gaming OC 8G runs at 1.968 GHz base clock speed and has 8 GB of GDDR6 memory, while video card ASUS TUF Gaming GeForce GTX 1660 runs at 1.530 GHz base clock speed and has 6 GB of GDDR5 memory. The TDP of the first video card is 160 W, and the second is 120 W. Compare the table of benchmark results to find out which graphic card is better.