Comparison of ASRock Radeon RX 6600 XT Challenger ITX 8GB video card vs GIGABYTE GeForce GTX 1080 Mini ITX 8G 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 GIGABYTE GeForce GTX 1080 Mini ITX 8G runs at 1.733 GHz+ 8 % base clock speed and has 8 GB of GDDR5X memory. The TDP of the first video card is 160 W, and the second is 180 W. Compare the table of benchmark results to find out which graphic card is better.