Comparison of GIGABYTE GeForce RTX 2080 Ti Windforce 11G video card vs ZOTAC GeForce GTX 980 Ti video card by specs and benchmarks. GIGABYTE GeForce RTX 2080 Ti Windforce 11G runs at 1.350 GHz base clock speed and has 11 GB of GDDR6 memory, while video card ZOTAC GeForce GTX 980 Ti runs at 1.350 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.