Comparison of MSI Radeon RX 6650 XT MECH 2X 8G OC video card vs XFX Speedster MERC 308 Radeon RX 6650 XT BLACK Gaming video card by specs and benchmarks. MSI Radeon RX 6650 XT MECH 2X 8G OC runs at 2.055 GHz base clock speed and has 8 GB of GDDR6 memory, while video card XFX Speedster MERC 308 Radeon RX 6650 XT BLACK Gaming runs at 2.055 GHz base clock speed and has 8 GB of GDDR6 memory. The weight is different, 721 g vs --. The TDP of the first video card is 175 W-1 %, and the second is 175 W-1 % . Compare the benchmark results to find out which video card is better.