Comparison of GIGABYTE Radeon RX Vega 64 Silver 8G video card vs GALAX GeForce GTX 1080 EX OC V2 video card by specifications and benchmarks. GIGABYTE Radeon RX Vega 64 Silver 8G runs at 1.247 GHz base clock speed and has 8 GB of HBM2 memory, while video card GALAX GeForce GTX 1080 EX OC V2 runs at 1.620 GHz+ 1 % 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.