Comparison of KFA2 GeForce GTX 1660 video card vs ZOTAC Gaming GeForce RTX 3080 Ti AMP Holo video card by specifications and benchmarks. KFA2 GeForce GTX 1660 runs at 1.530 GHz base clock speed and has 6 GB of GDDR5 memory, while video card ZOTAC Gaming GeForce RTX 3080 Ti AMP Holo runs at 1.365 GHz base clock speed and has 12 GB of GDDR6X memory. The TDP of the first video card is 120 W, and the second is 350 W. Compare the table of benchmark results to find out which graphic card is better.