Comparison of Sapphire Radeon RX Vega 64 video card vs Colorful iGame GeForce GTX 1080 Vulcan UT V2-V video card by specifications and benchmarks. Sapphire Radeon RX Vega 64 runs at 1.247 GHz base clock speed and has 8 GB of HBM2 memory, while video card Colorful iGame GeForce GTX 1080 Vulcan UT V2-V runs at 1.607 GHz base clock speed and has 8 GB of GDDR5X memory. The TDP of the first video card is 295 W, and the second is 180 W. Compare the table of benchmark results to find out which graphic card is better.