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Windows 7: Things are getting a bit warm...advice on fans and mounting?

14 Jul 2013   #11
Andreas W

Windows 7 Home Premium x64
 
 

Not sure about the fans but my guess would be that the more fans you have blowing air out would help get rid of heat faster but its hard to say or if it matters more with smaller cases as I noticed zero difference in temps running my fans at 12v vs 7v other then noise dropping.

And to free out space at the bottom do you have the option to screw out the bottom part that is holding your harddrives and move them up to the 5.25 bay using harddrives converter using something like these Akasa HDD Cooler / Anti-Vibration Suspension Set (AK-HD03-BK) - FrozenCPU.com there are cheaper out there just took them as the first ones I found. But I guess that only works if your not using a cd-rom drive and not sure how much those Cables are pushed into that area


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14 Jul 2013   #12
madcratebuilder

Win8/8.1,Win7-U64, Vista U64, uncounted Linux distor's
 
 

Quote   Quote: Originally Posted by Mitim0 View Post
I'm in the lower mianland BC. The daily temperature right now is low 20c's actually, but a few times it has climbed to 27c. My room can also get a bit warm too, depending on the day (the sun shines in to it almost directly). But now that you point that out, it is weird to see my starting temps are 30c when the air temp would be much lower. Hm, I think I'll have to double check that.

13 fans is a lot. I only have two right now.

Based on the advice from the replies here, I think what I'll do is mount 2 fans at the bottom to blow air in (directly right under/at the GPU), starting with 80mm fans if they'll fit, then if it isn't enough I'll enlarge the hole in the plexiglass to fit in larger fans -which would have to stick out a bit (Andreas's suggestion).

At the moment I only have one 140mm fan blowing the air out. If I have three fans blowing air in one and only one fan blowing out (cumulatively faster then the one fan blowing air out), would that matter?
13 fans does sound a bit over the top 3 40's on the Corsair memory cooler, not really needed, I have a temp probe on my memory and temps seldom are more than a few degrees above case air temps, with or without the fans running. They do keep the internal air moving.

2 GPU's add 2 more 80mm fans, 7770's CrossFired. The North Bridge on my 990fxa can get pretty hot so I added a Thermaltake fan/cooler, so 1 more 40mm fan. I have my radiator mount the the upper rear of the case interior, radiator mounts to the case and 1 fan inside pushing through the radiator, and 1 fan outside the case pulling air.

With this many fans I can keep the RPM very low so the noise level is very low. My XP box is a Lian-Li PC70 with three 80mm fans and it a higher noise level than the HAF 922. If I crank all the 922 fans up to full RPM it sounds like a F86 spooling up for takeoff. When I push the CPU I do need to crank up the radiator fans to keep temps under control.

I can't count, I have 12 fans, not 13.
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19 Jul 2013   #13
Mitim0

Microsoft Windows 7 Professional 64-bit 7601 Multiprocessor Free Service Pack 1
 
 

Ah, I was picturing all your fans were case fans, but I guess counting inside fans then I have a cpu and gpu fan. Oh and one more on the motherboard itself for a total of 5. Maybe not as 'behind' as I thought.

Andreas, I am using a DVD drive and the cables are pretty solid in there. Still, I could move one or two drives to try to improve airflow from the front to the rear. Something to keep in mind I guess (had no idea there was even such a thing).

After some research/thinking/slacking, I think what I've decided to do is replace my rear 120mm fan (it was just a generic fan that came with the case and doesn't seem to be pulling out a lot of air in the case) with a Noctua NF-P12-1300.

Then after a bit of checking (lego works wonders ), I can Just fit a 120mm fan on the side panel window as another intake fan.

My current question would be get a pair of NF-P12's or to have one NF-S12B and NF-P12. The rear NF-P12 would have the cpu heat sink almost directly in front of it while at the other spot on the side does not have too much of an obstruction (a NF-S12B seems to be more suited there according to the site?). Or maybe I'll just see which is cheaper when I get to the store tomorrow.
My System SpecsSystem Spec
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19 Jul 2013   #14
linnemeyerhere

Microsoft Community Contributor Award Recipient

Windows 7 Ultimate 64
 
 

I would use any of the Noctua fans. The focused flow will direct a stream of air, the p series is great when the case fan is needed for pressure much like the focused great for radiators and the s series is likely the most suited but they'll all work great. Oh and don't to forget to count your PSU fan ! lol
My System SpecsSystem Spec
23 Jul 2013   #15
Mitim0

Microsoft Windows 7 Professional 64-bit 7601 Multiprocessor Free Service Pack 1
 
 

Finally installed my mentioned fans after a bit of cutting and drilling. Things seem to be nicer now, comparing to previous temps, playing sc2 (heaviest load) it has dropped 10-20c degrees (usually staying in between 60-65c, occasionally going to 67c and dipping as low as 56c) while other loads see 10-15c degree drops. Idle temps see a nice drop of 4-9 degrees too...currently at 35c for the gpu (where before it would be somewhere between 39-44c before).

I plugged the 3 pin fan connectors in to the motherboard without any adapters and was under the impression it would spin at full (1300rpm), but it seems this is not the case. For the moment, it seems my fans are spinning at ~900 +/- 50...while on the box it says 900rpm is with ULNA. I guess my motherboard is controlling the fan by limiting voltage to them? I can't seem to find where to change this, any ideas? I thought it would be in the bios, but can't find it any setting to 'force' it to 1300rpm or 'max'. A bit tempted to push them a bit to see how cool it'll go as right now they are quite quiet.
My System SpecsSystem Spec
23 Jul 2013   #16
linnemeyerhere

Microsoft Community Contributor Award Recipient

Windows 7 Ultimate 64
 
 

I like to keep all unnecessary voltage off my mobo so I run all my Noctua's wide open off molex to three pin converters from the PSU directly. I was a big fan....get it.....of fan controllers till going to Noctua's which are so well made and quiet even at full 12v tilt.
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 Things are getting a bit warm...advice on fans and mounting?




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