Comparison of Gainward GeForce GTX 1660 Ghost OC video card vs ZOTAC Gaming GeForce RTX 3070 Twin Edge LHR video card by specifications and benchmarks. Gainward GeForce GTX 1660 Ghost OC runs at 1.530 GHz base clock speed and has 6 GB of GDDR5 memory, while video card ZOTAC Gaming GeForce RTX 3070 Twin Edge LHR runs at 1.500 GHz base clock speed and has 8 GB of GDDR6 memory. The TDP of the first video card is 120 W, and the second is 220 W. Compare the table of benchmark results to find out which graphic card is better.