Comparison of ASUS Strix GeForce GTX 970 OC video card vs Zotac GeForce GTX 970 AMP! Extreme Core video card by specifications and benchmarks. ASUS Strix GeForce GTX 970 OC runs at 1.114 GHz+ 6 % base clock speed and has 4 GB of GDDR5 memory, while video card Zotac GeForce GTX 970 AMP! Extreme Core runs at 1.228 GHz+ 17 % base clock speed and has 4 GB of GDDR5 memory. The TDP of the first video card is 145 W-2 %, and the second is 145 W-2 %. Compare the table of benchmark results to find out which graphic card is better.