Comparison of ZOTAC GeForce GTX 1080 Ti AMP Extreme video card vs MSI Radeon RX 6600 ARMOR 8G video card by specifications and benchmarks. ZOTAC GeForce GTX 1080 Ti AMP Extreme runs at 1.645 GHz+ 11 % base clock speed and has 11 GB of GDDR5X memory, while video card MSI Radeon RX 6600 ARMOR 8G runs at 1.626 GHz base clock speed and has 8 GB of GDDR6 memory. The TDP of the first video card is 320 W+ 28 %, and the second is 132 W. Compare the table of benchmark results to find out which graphic card is better.