Comparison of GIGABYTE Radeon RX Vega 64 Silver 8G video card vs Gainward GeForce RTX 3070 Phantom video card by specifications and benchmarks. GIGABYTE Radeon RX Vega 64 Silver 8G runs at 1.247 GHz base clock speed and has 8 GB of HBM2 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 295 W, and the second is 250 W+ 14 %. Compare the table of benchmark results to find out which graphic card is better.