Comparison of EVGA GeForce GTX 980 Hydro Copper video card vs Zotac GeForce GTX 980 OC video card by specifications and benchmarks. EVGA GeForce GTX 980 Hydro Copper runs at 1.291 GHz+ 15 % base clock speed and has 4 GB of GDDR5 memory, while video card Zotac GeForce GTX 980 OC runs at 1.139 GHz+ 1 % base clock speed and has 4 GB of GDDR5 memory. The TDP of the first video card is 165 W, and the second is 165 W. Compare the table of benchmark results to find out which graphic card is better.