Comparison of KFA2 GeForce GTX 970 HOF video card vs Zotac GeForce GTX 970 AMP! video card by specifications and benchmarks. KFA2 GeForce GTX 970 HOF runs at 1.228 GHz+ 17 % base clock speed and has 4 GB of GDDR5 memory, while video card Zotac GeForce GTX 970 AMP! runs at 1.114 GHz+ 6 % 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.