Comparison of GALAX GeForce GTX 1080 Ti EX OC White video card vs Gainward GeForce GTX 980 Ti Phoenix GS video card by specs and benchmarks. GALAX GeForce GTX 1080 Ti EX OC White runs at 1.531 GHz+ 3 % base clock speed and has 11 GB of GDDR5X memory, while video card Gainward GeForce GTX 980 Ti Phoenix GS runs at 1.531 GHz+ 3 % base clock speed and has 6 GB of GDDR5 memory. The weight is different, -- vs --. The TDP of the first video card is 250 W, and the second is 250 W . Compare the benchmark results to find out which video card is better.