Comparison of GIGABYTE Radeon RX Vega 64 Silver 8G video card vs MANLI GeForce RTX 3090 (M3478) 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 MANLI GeForce RTX 3090 (M3478) runs at 1.395 GHz base clock speed and has 24 GB of GDDR6X memory. The TDP of the first video card is 295 W, and the second is 350 W. Compare the table of benchmark results to find out which graphic card is better.