The Mood has a separate chamber for the GPU, meaning that the measurements below are static and will not be affected by other components:
Maximum GPU length: 325 mm
Maximum GPU height: 145 mm if excluding cables. 158 mm if including cables.
Maximum GPU width/thickness: 56 mm including backplate. 53 mm excluding backplate.
Due to the design of the case, we recommend avoiding blower-style GPUs as the hot air exhausted will end up towards the bottom of the case.