Case Fans

Cbeck527 · 02-09-2006, 04:14 AM

Quick question...

Are case fans supposed to blow the hot air out of the case or the cool air in to the case?

[-0MEGA-] · 02-09-2006, 04:15 AM

You need both, some to suck out the hot air and some to blow cooler air in.

IMO, the best way to position fans is to have the intake fans on the front and side of the case, and exhaust on the top or back.

Cbeck527 · 02-09-2006, 04:19 AM

Quote:

Originally Posted by geoff5093

You need both, some to suck out the hot air and some to blow cooler air in.

IMO, the best way to position fans is to have the intake fans on the front and side of the case, and exhaust on the top or back.

Great, thats were the fans slots are in my case!

bigsaucybob · 02-09-2006, 04:22 AM

Quote:

Originally Posted by Cbeck527

Great, thats were the fans slots are in my case!

perfect. but in addition to wat geoff said, i think its best to have intake fans on near the bottom of the case and extake fans near the top of the case. Hot air rises, so all hot air is at the top of your case.

[-0MEGA-] · 02-09-2006, 04:23 AM

Quote:

Originally Posted by bigsaucybob

perfect. but in addition to wat geoff said, i think its best to have intake fans on near the bottom of the case and extake fans near the top of the case. Hot air rises, so all hot air is at the top of your case.

very true, however alot of cases dont have spots for fans on the top, usually just 1-2 on the back, 1-2 in the front, and 1 on either side.

bigsaucybob · 02-09-2006, 04:30 AM

Quote:

Originally Posted by geoff5093

very true, however alot of cases dont have spots for fans on the top, usually just 1-2 on the back, 1-2 in the front, and 1 on either side.

yes so back to your point. the fans in the back are usually higher than the fans on the front. so as you said, intake in the front and extake on the back.

Yasu · 02-09-2006, 04:34 AM

Don't forget that some PSUs have fans even higher than the exhaust fans and that helps take the hot air out and cool down the PSU at the same time(my old raidmax PSU had that at least).

[-0MEGA-] · 02-09-2006, 04:38 AM

Quote:

Originally Posted by Yasu

Don't forget that some PSUs have fans even higher than the exhaust fans and that helps take the hot air out and cool down the PSU at the same time(my old raidmax PSU had that at least).

Most power supplies have at least 2 fans, some have 3 or 4.

Cbeck527 · 02-09-2006, 04:41 AM

2nd Question:
How can you find out whick way the fan is blowing?
Is it on the fan, or do you have to use the 'ol lick the finger test?

b182tm · 02-09-2006, 04:48 AM

Well, some fans have it on the side, with direction of fan rotation, and direction of air...But a much easier way to do it is to THINK about it. Just think, there is one direction that the fans could spin that wouldnt move air, and another way that would move air...The fins scoop the air...Just think...I dont know how to explain it, sorry. And I have another question...It seems like in the PSU, one of my fans blows into the case, which seems weird. That would mean it is blowing hot air into the case. Does it blow out or into the PSU?

Derek

02-09-2006, 04:14 AM	#1 (permalink)
Cbeck527 Silver Member Join Date: Jan 2006 Location: Blue Bell, Pennsylvainia Age: 17 Posts: 168	Case Fans Quick question... Are case fans supposed to blow the hot air out of the case or the cool air in to the case? __________________ CPU: AMD Athlon64 3500+ Venice MOBO: Abit KN8 SLI GPU: XFX 7800GT 256MB VRAM RAM: 2x 512MB Patriot Signature Series HDD: Western Digital 300GB 7200RPM, Western Digital 20GB 5400RPM PSU: Antec 550watt Truepower 2.0 SPU: Creative Sound Blaster Audigy 2 ZS CASE: Aspire X-Dreamer MONITOR: BenQ FP91G+ Queen said it first: Wii Will Wii Will ROCK YOU

02-09-2006, 04:15 AM	#2 (permalink)
[-0MEGA-] VIP Member Join Date: Nov 2004 Location: Concord, NH Age: 20 Posts: 27,979	You need both, some to suck out the hot air and some to blow cooler air in. IMO, the best way to position fans is to have the intake fans on the front and side of the case, and exhaust on the top or back. __________________ Core 2 Quad Q9550 @ 4.1GHz Asus Rampage Formula X48 ATI 4870X2 2GB GDDR5 (800/1900) 4GB (2x2GB) DDR2 960 750GB SATAII w/32MB Creative SB X-Fi Titanium Fatal1ty SilverStone 750W +12V@60A 3DMark06: 22605 www.photosbygeoff.com

02-09-2006, 04:34 AM	#7 (permalink)
Yasu Diamond Member Join Date: Jan 2006 Location: TX Age: 20 Posts: 1,199	Don't forget that some PSUs have fans even higher than the exhaust fans and that helps take the hot air out and cool down the PSU at the same time(my old raidmax PSU had that at least). __________________ CPU: Intel P4 3.0 HT Mobo: ASUS P5P800 RAM: 2x512 PC3200 VC: ATI Radeon X850PRO HDD: 160GB Seagate SATA PSU: 500watt Ultra X-connect

02-09-2006, 04:41 AM	#9 (permalink)
Cbeck527 Silver Member Join Date: Jan 2006 Location: Blue Bell, Pennsylvainia Age: 17 Posts: 168	2nd Question: How can you find out whick way the fan is blowing? Is it on the fan, or do you have to use the 'ol lick the finger test? __________________ CPU: AMD Athlon64 3500+ Venice MOBO: Abit KN8 SLI GPU: XFX 7800GT 256MB VRAM RAM: 2x 512MB Patriot Signature Series HDD: Western Digital 300GB 7200RPM, Western Digital 20GB 5400RPM PSU: Antec 550watt Truepower 2.0 SPU: Creative Sound Blaster Audigy 2 ZS CASE: Aspire X-Dreamer MONITOR: BenQ FP91G+ Queen said it first: Wii Will Wii Will ROCK YOU

02-09-2006, 04:48 AM	#10 (permalink)
b182tm Diamond Member Join Date: Jun 2005 Location: Bronco Country Age: 20 Posts: 1,044	Well, some fans have it on the side, with direction of fan rotation, and direction of air...But a much easier way to do it is to THINK about it. Just think, there is one direction that the fans could spin that wouldnt move air, and another way that would move air...The fins scoop the air...Just think...I dont know how to explain it, sorry. And I have another question...It seems like in the PSU, one of my fans blows into the case, which seems weird. That would mean it is blowing hot air into the case. Does it blow out or into the PSU? Derek __________________ mobo ASUS A8N5X cpu AMD Athlon 64 X2 4200+ memory 1GB GeIL RAM video card 6600 GT 128MB hard drive Samsung 120GB SATA HDD R.I.P. Darrent Williams

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