Comparison of GIGABYTE Radeon RX Vega 56 8G video card vs ASUS Turbo GeForce GTX 1080 TI video card by specifications and benchmarks. GIGABYTE Radeon RX Vega 56 8G runs at 1.156 GHz base clock speed and has 8 GB of HBM2 memory, while video card ASUS Turbo GeForce GTX 1080 TI runs at 1.480 GHz 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.