Comparison of PNY GeForce GTX 980 Pure Performance OC video card vs Zotac GeForce GTX 980 AMP! Omega video card by specifications and benchmarks. PNY GeForce GTX 980 Pure Performance OC runs at 1.203 GHz+ 7 % base clock speed and has 4 GB of GDDR5 memory, while video card Zotac GeForce GTX 980 AMP! Omega runs at 1.202 GHz+ 7 % 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.