Comparison of EVGA GeForce GTX 1080 Ti Black Edition GAMING video card vs EVGA GeForce GTX 980 Ti GAMING ACX 2.0+ video card by specifications and benchmarks. EVGA GeForce GTX 1080 Ti Black Edition GAMING runs at 1.480 GHz base clock speed and has 11 GB of GDDR5X memory, while video card EVGA GeForce GTX 980 Ti GAMING ACX 2.0+ runs at 1.000 GHz base clock speed and has 6 GB of GDDR5 memory. The TDP of the first video card is 250 W, and the second is 250 W. Compare the table of benchmark results to find out which graphic card is better.