Comparison of GIGABYTE GeForce GTX 980 Ti Xtreme Gaming C video card vs EVGA GeForce RTX 2080 Ti XC Gaming video card by specs and benchmarks. GIGABYTE GeForce GTX 980 Ti Xtreme Gaming C runs at 1.026 GHz+ 3 % base clock speed and has 6 GB of GDDR5 memory, while video card EVGA GeForce RTX 2080 Ti XC Gaming runs at 1.026 GHz+ 3 % base clock speed and has 11 GB of GDDR6 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.