Comparison of GIGABYTE GeForce GTX 970 Twin Turbo OC video card vs Zotac GeForce GTX 970 AMP! Omega Core video card by specs and benchmarks. GIGABYTE GeForce GTX 970 Twin Turbo OC runs at 1.101 GHz+ 5 % base clock speed and has 4 GB of GDDR5 memory, while video card Zotac GeForce GTX 970 AMP! Omega Core runs at 1.101 GHz+ 5 % 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.