Comparison of ASUS GeForce GTX 970 DirectCU II Black video card vs Zotac GeForce GTX 970 AMP! Omega video card by specs and benchmarks. ASUS GeForce GTX 970 DirectCU II Black runs at 1.050 GHz base clock speed and has 4 GB of GDDR5 memory, while video card Zotac GeForce GTX 970 AMP! Omega runs at 1.050 GHz 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.