Comparison of Gainward GeForce GTX 1080 Ti Phoenix GS video card vs Gainward GeForce RTX 3080 Ti Phantom GS video card by specifications and benchmarks. Gainward GeForce GTX 1080 Ti Phoenix GS runs at 1.556 GHz+ 5 % base clock speed and has 11 GB of GDDR5X memory, while video card Gainward GeForce RTX 3080 Ti Phantom GS runs at 1.365 GHz base clock speed and has 12 GB of GDDR6X memory. The TDP of the first video card is 250 W, and the second is 400 W+ 14 %. Compare the table of benchmark results to find out which graphic card is better.