Hello, I’m thinking of buying the deepcool Morpheus because it’s 420mm radiator support and 200mm fan support and I’m wondering if putting fans on the fan slots next to the motherboard would help the cooling or not. I’m not sure since it could disrupt the flow direction of the other fans so I’m not sure if it’d make cooling better or worse. Also I’m curious if it has good airflow and noise and what configuration of the three it has would have the best cooling and noise? Those are the main things I’m looking for
Air flow’s parallel to fan shaft. Pretty much every fan sold for PCs is a tubeaxial. Usually they’re happier in push than in pull, though, contrary to what’s been indicated above.
Broadly speaking, greatest noise-normalized airflow’s likely to be obtained with 120s, though some 140s tie or do somewhat better in some circumstances. 160s, 180s, and 200s can provide more flow, mainly at lower resistances, but mostly not. Partly the larger fans get less optimization attention, partly it’s hard for, say, two 180s to match three 120s as they each need to provide 50% more airflow just to tie. Situation’s similar with 200s.
As there’s little data beyond 140, from a design perspective it’s likely best to measure rather than assume support for 200s confers any advantages.
Easy to spend less for 120s as good or better than the NF-A12x25 and the NF-A14x25 G2’s pretty tied by lower cost competitors. See QuasarZone and HWCooling’s measurements. Fractal’s 180s are probably the best option in that size, not many 200s.
30 mm is skinny for a 200. Scale up from 120x25 would be 42 mm, 36 mm for 140x25. There’s not really evidence thicker than that helps and evidence for thinner being detrimental is fairly weak due to limited data for a limited number of fan designs.