Comparison of ASRock Radeon RX 6600 XT Challenger ITX 8GB video card vs Colorful GeForce GTX 1660 SUPER 6G-V video card by specifications and benchmarks. ASRock Radeon RX 6600 XT Challenger ITX 8GB runs at 1.968 GHz base clock speed and has 8 GB of GDDR6 memory, while video card Colorful GeForce GTX 1660 SUPER 6G-V runs at 1.530 GHz base clock speed and has 6 GB of GDDR6 memory. The TDP of the first video card is 160 W, and the second is 125 W. Compare the table of benchmark results to find out which graphic card is better.