Comparison of Gainward GeForce RTX 2080 SUPER Phantom GLH video card vs ZOTAC GeForce GTX 980 Ti AMP! video card by specs and benchmarks. Gainward GeForce RTX 2080 SUPER Phantom GLH runs at 1.650 GHz base clock speed and has 8 GB of GDDR6 memory, while video card ZOTAC GeForce GTX 980 Ti AMP! runs at 1.650 GHz 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.