Comparison of GIGABYTE GeForce GTX 980 Ti Xtreme Gaming C video card vs Gainward GeForce GTX 980 Ti Phoenix GS 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 Gainward GeForce GTX 980 Ti Phoenix GS runs at 1.026 GHz+ 3 % 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.