Comparison of Sapphire Radeon RX Vega 64 video card vs EVGA GeForce GTX 1080 Ti SC2 ELITE GAMING GREEN 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 EVGA GeForce GTX 1080 Ti SC2 ELITE GAMING GREEN runs at 1.556 GHz+ 5 % base clock speed and has 11 GB of GDDR5X memory. The TDP of the first video card is 295 W, and the second is 250 W. Compare the table of benchmark results to find out which graphic card is better.