Comparison of GIGABYTE GeForce GTX 980 Ti Xtreme Gaming C video card vs KFA2 GeForce RTX 2080 Ti OC video card by specifications 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 KFA2 GeForce RTX 2080 Ti OC runs at 1.350 GHz base clock speed and has 11 GB of GDDR6 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.