Comparison of EVGA GeForce GTX 1080 Ti SC2 Hydro Copper GAMING video card vs Colorful iGame GTX 980 Ti 20th Anniversary Edition video card by specs and benchmarks. EVGA GeForce GTX 1080 Ti SC2 Hydro Copper GAMING runs at 1.556 GHz+ 5 % base clock speed and has 11 GB of GDDR5X memory, while video card Colorful iGame GTX 980 Ti 20th Anniversary Edition runs at 1.556 GHz+ 5 % 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.