Thanks for the tips, J!
here is an overview of my pc and fan-setup:
The pics frankly are a PITA... It would appear ...
Rear = Exhaust
Top = Exhaust
Bottom = Exhaust
Front = I can't tell... Intake ?
1) can you just list what you have in the format above, 2) if they are all the same fan, 3) which ones have air filters and 4) any more unused fan mounts left ?. Typically intake fan locations are filtered. Also isnt that a mATX MoBo ?
If you can manage 1.33 to 1.50 intake fans, then the way to go is
Rear = Exhaust
Top = Exhaust
Bottom = Intake
Front = Intake
So this works
Rear = 1 x Exhaust
Top = 2 x Exhaust
Bottom = 1x Intake
Front = 3 x Intake
If you don't have that many mounts in front that won't work. What's wrong with this picture ?
1
x exhaust top and 1x rear / 2 x intake front and bottom ? Each fan produces X cfm. The intake fans will typically have air filters on the case which will restrict air flow by as much as a third when dirty, so
2 intakes x 2/3 = 1.33 X air in
2 exhausts = 2.00 X air out
So it's understood that the fanc create negative pressure inside the case, and ince the case hasn't imploded, make up air is getting in somewhere.... the most likely place is the rear case grilles and the vented slot covers and what kind aie is back there ? All the hot exhaust from your 200 watt GPU and 550 watt PSU ... not good idea sucking hot air into the case, idea iss to get it out and keep it out.
2
x exhaust top and 1 xrear / 2 x intake front and bottom ?
2 intakes x 2/3 = 1.33 X air in
3 exhausts = 3.00 X air out
Now it's a lot worse.
So, if ya can let go of what we all learned in 8th grade earth science "hot air rises", as anyone who has ever sat under a ceiling fan knows.... not when a fan is blowing in the other direction. The air inside your case is chnaging between 1 and 2 times per second... all of it. But it's really know if the case is under negative pressure and the hot exhaust is being sucked back in. So if you find yaself in a situation where poor case design does not allow for more air in than out, you won't be able to maintain positive pressure. You can easily test this for yaself... I use a $35 garage band fog machine from Amazon to test and when negative pressure exists when you blow the fog behind the case, it fills up with fog so we know air behind the case is getting sucked in. I am going to assume that you have a spare fan mount in front and top.
Two fans in front + one at bottom = 3 intakes x 2/3 = 2.00 X air in
Two fans on top + one at rear = 3 exhausts = 3.00 X air out ... No Good.
Corrective option... don't like not having a rear fan but given the stock cooler and not a big heat sink...
Two fans in front + one at bottom = 3 intakes x 2/3 = 2.00 X air in
Two fans on top + none at rear = 2 exhausts = 2.00 X air out ... Good enough
as long as you keep filters clean..
or...
Two fans in front + one at bottom = 3 intakes x 2/3 = 2.00 X air in
One fan at rear = 12 exhausts = 1.00 X air out ... extra air will be forced out rear and top grilles.
If course if you could manage 3 exhausts and 4 intakes, (via case mod on side panel if required), that would allow the rear fan to go back where it belongs. Another option would be to have both top fans blowing in (remeber ceiling fan from above. You don't need to have the same number of close to thr same number of fans, After all those who water cool always have rad fans blowing in "for best performance". See page 3, Window 1 of instructions for Corsair Top of case mounted AIOs.:
https://www.corsair.com/corsairmedia/sys_master/productcontent/49-000175_rev_AB_H100i_QSG_web.pdf
"For the best performance, we recommend mounting the fans as an air-intake into your case".
Great post! Ok. Will put 2x120 front and 1x120 back. Remove the others.
Actually, Katana 4 seems to be a very afforsable heatsink, thesame with Mugen... but which Mugen is the preferred and more quiet one? Mugen 5 Rev B? PCGH edition? Mugen Max? They are all at same price, more or less.
I think imma go for that Fractal Design C... but.. the regular is without glass while the TG is with glass.. is TG more silent or? I assume the regular one with no glass, hmm? Yes, im a sucker for silence too, for sure!
1. Leaving the 1 x 120mm on the bottom will help
2. The Mugen Max Rev B ($37) and Fuma ($46) are the best performance, matching / beating the performance of Noctua and Cryorig $90 flagships... will they fit ? However with that small mATX MoBo.... fit is often an issue issue.
3. The Fractal Design C has (120s only since that's what you have)
Front: 3 x 120mm (1 x pre-installed)
Top: 2 x 120
Bottom: 1 x 120mm fan
Rear: 1 x 120mm fan (1 x pre-installed)
That has the potential for 4 in and 3 out which works as long as you clean filters often and don't let them build up with dust which will reduce air flow
But again, that's an ATX ... much larger case ... for your mATX build. Since your build is currently mATX based, if moving to a new case, I'd suggest th mATX Evolv (Black, Gray and Silver options in Tempered Glass:
https://www.newegg.com/Product/Product.aspx?Item=N82E16811854057