Comparison of ASRock Radeon RX 6600 XT Challenger ITX 8GB video card vs Colorful GeForce GTX 1060 SI-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 1060 SI-6G-V runs at 1.506 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.