Comparison of KFA2 GeForce GTX 970 EXOC Black Edition video card vs Zotac GeForce GTX 970 AMP! Extreme video card by specs and benchmarks. KFA2 GeForce GTX 970 EXOC Black Edition runs at 1.164 GHz+ 11 % base clock speed and has 4 GB of GDDR5 memory, while video card Zotac GeForce GTX 970 AMP! Extreme runs at 1.164 GHz+ 11 % base clock speed and has 4 GB of GDDR5 memory. The weight is different, -- vs --. The TDP of the first video card is 145 W-2 %, and the second is 145 W-2 % . Compare the benchmark results to find out which video card is better.