Comparison of ZOTAC GeForce GTX 1080 Ti AMP Extreme Core Edition video card vs KFA2 GeForce RTX 3090 EX Gamer (1-Click OC) video card by specifications and benchmarks. ZOTAC GeForce GTX 1080 Ti AMP Extreme Core Edition runs at 1.607 GHz+ 9 % base clock speed and has 11 GB of GDDR5X memory, while video card KFA2 GeForce RTX 3090 EX Gamer (1-Click OC) runs at 1.395 GHz base clock speed and has 24 GB of GDDR6X memory. The TDP of the first video card is 320 W+ 28 %, and the second is 420 W+ 20 %. Compare the table of benchmark results to find out which graphic card is better.