Comparison of INNO3D GeForce GTX 1080 Ti Twin X2 video card vs Gainward GeForce RTX 2080 Phoenix GS video card by specifications and benchmarks. INNO3D GeForce GTX 1080 Ti Twin X2 runs at 1.480 GHz base clock speed and has 11 GB of GDDR5X memory, while video card Gainward GeForce RTX 2080 Phoenix GS runs at 1.515 GHz base clock speed and has 8 GB of GDDR6 memory. The TDP of the first video card is 250 W, and the second is 215 W. Compare the table of benchmark results to find out which graphic card is better.