Comparison of PowerColor Radeon RX Vega 56 Red Devil video card vs EVGA GeForce GTX 1080 Ti SC2 ELITE GAMING BLACK video card by specifications and benchmarks. PowerColor Radeon RX Vega 56 Red Devil runs at 1.308 GHz+ 13 % base clock speed and has 8 GB of HBM2 memory, while video card EVGA GeForce GTX 1080 Ti SC2 ELITE GAMING BLACK runs at 1.556 GHz+ 5 % base clock speed and has 11 GB of GDDR5X memory. The TDP of the first video card is 210 W, and the second is 250 W. Compare the table of benchmark results to find out which graphic card is better.