Comparison of Gainward GeForce GTX 1070 Phoenix GLH video card vs Gainward GeForce RTX 3070 Phantom video card by specifications and benchmarks. Gainward GeForce GTX 1070 Phoenix GLH runs at 1.670 GHz+ 11 % base clock speed and has 8 GB of GDDR5 memory, while video card Gainward GeForce RTX 3070 Phantom runs at 1.500 GHz base clock speed and has 8 GB of GDDR6 memory. The TDP of the first video card is 150 W, and the second is 250 W+ 14 %. Compare the table of benchmark results to find out which graphic card is better.