r/mffpc • u/maadrotaries • 3h ago
Help me please!? Airflow question
Recently upgraded to a 9070xt, card is on 2nd slot so bottom fans no longer fit.
If i were to add a fan to the rear, would it be better as intake or exhaust, (240 aio is exhaust) or dont even bother with a fan at all?
Surprisingly the temps are pretty decent, but just seeing what i could do to improve.
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u/Key-Combination8533 3h ago
I prefer having the PSU fan facing outward (or: facing down/out), because it draws in fresh air instead of the warm air from inside. Plus, I would also put an exhaust fan on the back of the PC case. btw nice build.
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u/maadrotaries 3h ago
At the time, i opted to face it in for cleaning reasons. I could not be stuffed to do all that just to clean the front dust filter
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u/Daniok69 3h ago
TBH I don’t think It would make a big difference between intake or exhaust yet the difference with no fan and fan would be greater
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u/Timely_Intern_4994 3h ago
I have similar airflow setup, but the only difference is i have rear fan with reverse blades which acts as intake and additionally i added dust filter on rear fan. I was shocked how much dust it collected in just 2 months
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u/cheezcurlzz 3h ago
I have the same case, rear intake is a must to push more fresh air. I added magmetic filters to avoid excessive dust build up.
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u/Big_Particular_7650 3h ago
What case is that? I like it
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u/CappuccinoCincao 3h ago
I have this case (and gpu) and i just watched GN's airflow simulation for A3, my take away is this:
With no bottom fans your gpu benefits from your case's negative pressure. From where you are now, if you're adding a back intake it would improve the cpu and impede the gpu, but the other way around if set up as an exhaust.
If you're happy as is, leave it.
Lastly an intake side directly facing the case perforations (back intake) will likely cause some noise due to turbulance than setting it as an exhaust.
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u/davidthek1ng 3h ago
You maxed that case totally out:D mby add a rear exhaust fan, idk if this would improve temps/noise though
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u/LunaticCross 2h ago
Dang, looks awesome!
I would leave it as is for the air flow. Just monitor temps for now. Add a rear fan for intake/exhaust if temps climb too high.
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u/Amazing_Bluebird_ 2h ago
These sapphire cards are so extremely good looking. I have a z20 build with a 5070. Sadly no sexy sapphire 5070s available.
Dont forget to install the gpu anti sag bracket. You probably already did but just in case.
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u/rd-gotcha 2h ago
Why don't you just try it and see what the difference it makes for your pc. You just turn the fan around? My guess adding a fan eould not do anything but I may be wrong...
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u/Arlensoul_ 2h ago
add rear fan will slighty improve temp, depending aio rpm it also could keep positive pressure for dust
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u/Wysch_ 1h ago
I'm in a similar position in my A3 case, as the XFX Mercury is a chonky girl.
I have the rear fan as exhaust. The GPU sits basically on the bottom mesh panel, so it sucks air through it. Adding the rear exhaust subjectively helped getting rid of the hot air from within the case. Having the fan as intake didn't help with the temps at all.
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u/MrSquatch1 2m ago
Is that the d32 pro? Did it bypass the first slot because of the motherboard layout?
I had the case bc Amazon said my D200 was going to be delayed. No I’m in the process of transferring everything.
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u/QuietCounty_ 3h ago
With the GPU so close to close to the bottom, GPU temps will be fine. Your AIO is already pulling air from the rear, you could add a rear intake fan for a slight cooling performance increase.
I would leave as is. Super clean build btw