Comparison of KFA2 GeForce GTX 1660 EX White (1-Click OC) video card vs ZOTAC GAMING GeForce RTX 2080 AMP Extreme video card by specifications and benchmarks. KFA2 GeForce GTX 1660 EX White (1-Click OC) runs at 1.530 GHz base clock speed and has 6 GB of GDDR5 memory, while video card ZOTAC GAMING GeForce RTX 2080 AMP Extreme runs at 1.515 GHz base clock speed and has 8 GB of GDDR6 memory. The TDP of the first video card is 120 W, and the second is 280 W+ 30 %. Compare the table of benchmark results to find out which graphic card is better.