Comparison of MSI Radeon RX 6600 XT MECH 2X 8G OC video card vs GALAX GeForce GTX 1080 Ti video card by specifications and benchmarks. MSI Radeon RX 6600 XT MECH 2X 8G OC runs at 1.968 GHz base clock speed and has 8 GB of GDDR6 memory, while video card GALAX GeForce GTX 1080 Ti runs at 1.480 GHz base clock speed and has 11 GB of GDDR5X memory. The TDP of the first video card is 160 W, and the second is 250 W. Compare the table of benchmark results to find out which graphic card is better.