Comparison of GALAX GeForce GTX 980 Ti OC video card vs Gainward GeForce GTX 1080 Ti Phoenix GS video card by specs and benchmarks. GALAX GeForce GTX 980 Ti OC runs at 1.025 GHz+ 2 % base clock speed and has 6 GB of GDDR5 memory, while video card Gainward GeForce GTX 1080 Ti Phoenix GS runs at 1.025 GHz+ 2 % base clock speed and has 11 GB of GDDR5X 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.