Comparison of ZOTAC GeForce GTX 980 Ti AMP! Extreme video card vs GIGABYTE GeForce GTX 980 Ti Xtreme Gaming C video card by specifications and benchmarks. ZOTAC GeForce GTX 980 Ti AMP! Extreme runs at 1.253 GHz+ 25 % base clock speed and has 6 GB of GDDR5 memory, while video card GIGABYTE GeForce GTX 980 Ti Xtreme Gaming C runs at 1.026 GHz+ 3 % base clock speed and has 6 GB of GDDR5 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.