Comparison of EVGA GeForce GTX 1660 XC BLACK GAMING video card vs ZOTAC Gaming GeForce RTX 3070 Twin Edge OC LHR video card by specifications and benchmarks. EVGA GeForce GTX 1660 XC BLACK GAMING 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 OC 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.