Comparison of XFX Speedster ZERO Radeon RX 6950 XT RGB EKWB Waterblock Limited Edition video card vs XFX Speedster MERC 319 Radeon RX 6950 XT Black Gaming video card by specs and benchmarks. XFX Speedster ZERO Radeon RX 6950 XT RGB EKWB Waterblock Limited Edition runs at 2.210 GHz+ 15 % base clock speed and has 16 GB of GDDR6 memory, while video card XFX Speedster MERC 319 Radeon RX 6950 XT Black Gaming runs at 2.210 GHz+ 15 % base clock speed and has 16 GB of GDDR6 memory. The weight is different, -- vs --. The TDP of the first video card is 405 W+ 21 %, and the second is 405 W+ 21 % . Compare the benchmark results to find out which video card is better.