Comparison of PowerColor Radeon RX Vega 56 video card vs Colorful iGame GeForce RTX 3070 Vulcan OC-V video card by specifications and benchmarks. PowerColor Radeon RX Vega 56 runs at 1.156 GHz base clock speed and has 8 GB of HBM2 memory, while video card Colorful iGame GeForce RTX 3070 Vulcan OC-V runs at 1.500 GHz base clock speed and has 8 GB of GDDR6 memory. The TDP of the first video card is 210 W, and the second is 270 W+ 23 %. Compare the table of benchmark results to find out which graphic card is better.