Comparison of GIGABYTE Radeon RX Vega 64 Silver 8G video card vs GALAX GeForce RTX 2080 OC White 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 RTX 2080 OC White runs at 1.515 GHz base clock speed and has 8 GB of GDDR6 memory. The TDP of the first video card is 295 W, and the second is 215 W. Compare the table of benchmark results to find out which graphic card is better.