Comparison of KFA2 GeForce GTX 1080 Ti Founders Edition video card vs Gainward GeForce RTX 3080 Phantom video card by specifications and benchmarks. KFA2 GeForce GTX 1080 Ti Founders Edition runs at 1.480 GHz base clock speed and has 11 GB of GDDR5X memory, while video card Gainward GeForce RTX 3080 Phantom runs at 1.440 GHz base clock speed and has 10 GB of GDDR6X memory. The TDP of the first video card is 250 W, and the second is 340 W+ 6 %. Compare the table of benchmark results to find out which graphic card is better.