Comparison of EVGA GeForce GTX 1080 Ti SC2 ELITE GAMING video card vs EVGA GeForce GTX 980 Ti GAMING ACX 2.0+ video card by specs and benchmarks. EVGA GeForce GTX 1080 Ti SC2 ELITE GAMING runs at 1.556 GHz+ 5 % base clock speed and has 11 GB of GDDR5X memory, while video card EVGA GeForce GTX 980 Ti GAMING ACX 2.0+ 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.