Comparison of XFX Speedster ZERO Radeon RX 6900 XT RGB EKWB Waterblock Limited Edition video card vs ASRock Radeon RX 6900 XT Phantom Gaming D 16G OC video card by specs and benchmarks. XFX Speedster ZERO Radeon RX 6900 XT RGB EKWB Waterblock Limited Edition runs at 2.200 GHz+ 21 % base clock speed and has 16 GB of GDDR6 memory, while video card ASRock Radeon RX 6900 XT Phantom Gaming D 16G OC runs at 2.200 GHz+ 21 % base clock speed and has 16 GB of GDDR6 memory. The weight is different, -- vs 1784 g. The TDP of the first video card is 300 W, and the second is 300 W . Compare the benchmark results to find out which video card is better.