Comparison of ZOTAC GeForce GTX 1070 video card vs Gainward GeForce RTX 3080 Phantom+ LHR video card by specifications and benchmarks. ZOTAC GeForce GTX 1070 runs at 1.506 GHz base clock speed and has 8 GB of GDDR5 memory, while video card Gainward GeForce RTX 3080 Phantom+ LHR runs at 1.440 GHz base clock speed and has 10 GB of GDDR6X memory. The TDP of the first video card is 220 W+ 47 %, and the second is 340 W+ 6 %. Compare the table of benchmark results to find out which graphic card is better.