Comparison of Gainward GeForce GTX 1080 Phoenix GS video card vs GALAX GeForce RTX 2080 GAMER video card by specifications and benchmarks. Gainward GeForce GTX 1080 Phoenix GS runs at 1.708 GHz+ 6 % base clock speed and has 8 GB of GDDR5X memory, while video card GALAX GeForce RTX 2080 GAMER runs at 1.515 GHz base clock speed and has 8 GB of GDDR6 memory. The TDP of the first video card is 180 W, and the second is 215 W. Compare the table of benchmark results to find out which graphic card is better.