Comparison of ASUS Dual Radeon RX 6600 XT OC video card vs ZOTAC GeForce GTX 1080 Ti AMP Edition video card by specifications and benchmarks. ASUS Dual Radeon RX 6600 XT OC runs at 2.000 GHz+ 2 % base clock speed and has 8 GB of GDDR6 memory, while video card ZOTAC GeForce GTX 1080 Ti AMP Edition runs at 1.569 GHz+ 6 % base clock speed and has 11 GB of GDDR5X memory. The TDP of the first video card is 160 W, and the second is 270 W+ 8 %. Compare the table of benchmark results to find out which graphic card is better.