Comparison of ZOTAC GeForce GTX 1070 Twin Fan video card vs Gainward GeForce RTX 3070 Phantom+ GS LHR video card by specifications and benchmarks. ZOTAC GeForce GTX 1070 Twin Fan runs at 1.506 GHz base clock speed and has 8 GB of GDDR5 memory, while video card Gainward GeForce RTX 3070 Phantom+ GS LHR runs at 1.500 GHz base clock speed and has 8 GB of GDDR6 memory. The TDP of the first video card is 220 W+ 47 %, and the second is 270 W+ 23 %. Compare the table of benchmark results to find out which graphic card is better.