Comparison of MSI Radeon RX Vega 56 8G video card vs EVGA GeForce RTX 3090 XC3 GAMING video card by specifications and benchmarks. MSI Radeon RX Vega 56 8G runs at 1.156 GHz base clock speed and has 8 GB of HBM2 memory, while video card EVGA GeForce RTX 3090 XC3 GAMING runs at 1.395 GHz base clock speed and has 24 GB of GDDR6X memory. The TDP of the first video card is 210 W, and the second is 350 W. Compare the table of benchmark results to find out which graphic card is better.