Comparison of ZOTAC GeForce GTX 1070 OEM video card vs GALAX GeForce GTX 1660 Ti (1-Click OC) video card by specifications and benchmarks. ZOTAC GeForce GTX 1070 OEM runs at 1.506 GHz base clock speed and has 8 GB of GDDR5 memory, while video card GALAX GeForce GTX 1660 Ti (1-Click OC) runs at 1.500 GHz base clock speed and has 6 GB of GDDR6 memory. The TDP of the first video card is 150 W, and the second is 120 W. Compare the table of benchmark results to find out which graphic card is better.