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I recently had a problem with my PC’s case fan & noticed that it is blowing air out. I have read somewhere that the fans should blow into the case to pressurise the case? Which way is the right way around?
Also my case is a large tower with only one fan in the back (this is beside the PSU fan), is this sufficient for cooling? I have seen towers with 2-3 fans!
P.S. My system is running on Athlon Xp 2400+ & 512 DDR RAM
Thanks for your help
Positron
Intake case fans do not reside in the back of the case but rather in the front or the side panel. Leave your exhaust fan the way it is.
Are you having heat related issues?
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The Fan below the PSU should extract or pull the air out as it is doing now. A pc case should really have a fan in the front of the case to bring in cool air and a fan in the rear to exhaust hot air. If possible add one in the front.
Hope this helps
DamianPentium4 3.20ghz@ 3.5ghz
1Gb Crucial XMS PC3200CL2
1 X 80GB HDD OS
1X 40GB HDD STORAGE
NVDIA GeForce4 MX4000 Pro
ASUS P4-U800-X
600w PSU 12v 1-14amp
2-15amp
WinXp
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"A pc case should really have a fan in the front of the case to bring in cool air"
I always thought that myself, but AMD says differently.
The following was taken from AMD's "Builders Guide for Desktop/Tower Systems":
"The first six factors are relatively self-evident, the seventh one can be elusive. Here are some basic guidelines to aid in finding an enclosure with adequate cooling capability:
• Standard horizontal cases are not recommended—use vertical cases only.
• With the vertical case, a power supply with ATX-style bottom air intake vents maintains a better thermal environment than a power supply with only a front air intake vent.
• Cases with an added fan in the back cool better than cases without an added fan.
• The rear fans must all pull air in the same direction; otherwise one fan pulls warm air out of the enclosure while the other fan pulls the preheated air back into the enclosure.
• Front intake fans have not proven to be a significant benefit for vertical cases.
• Fans 80mm or larger work best.
• There must be clear space in front of the system case to allow cooling air to flow in, and space behind the case for the heated air to flow out.
• Cables inside the enclosure can cause airflow disruptions. Cable-tie and route the cables out of the path of the cooling airflow."
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"more fans = more noise"
im quessing the fan in the rear is a BOG standard black plastic jobby so if he buys a decent fan for the front it will probably be quieter than the HS fan and the rear fan anyhow.
And Same here Jam owell im not going to take the two out the front of mine AS IM AN "INTEL MAN" :)Pentium4 3.20ghz@ 3.5ghz
1Gb Crucial XMS PC3200CL2
1 X 80GB HDD OS
1X 40GB HDD STORAGE
NVDIA GeForce4 MX4000 Pro
ASUS P4-U800-X
600w PSU 12v 1-14amp
2-15amp
WinXp
0
As far as I can tell, Intel makes no statement for or against front intake fans, but they strongly recommend having a ducted side panel
ftp://download.intel.com/support/processors/pentium4/sb/38cchassis.jpg
http://www.intel.com/support/processors/pentium4/sb/cs-008537.htm
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Good post by Jam. Note especially the following part:
"The rear fans must all pull air in the same direction; otherwise one fan pulls warm air out of the enclosure while the other fan pulls the preheated air back into the enclosure."
Do yourself a favor BACKUP!
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I've done everything imaginable to make my 2400+ run as cool as reported by others. I do have a front fan running at minimum rpm and a rear fan like you do running at minimum rpm but, most cooling is done by the psu fan/rear fan combination.
Likely have evaluated 10 heatsink compounds, double that amount of fans, three or four fan controllers, and a few gadgets. One gadget worked pretty good and everything else did little to give a real measurable difference in motherboard and/or cpu temps.
When temp measurements don't vary by a ° or two (measured by a thermocouple), I don't believe those measurements mean much in our real world.
In other words, I think you setup is just fine the way it is.
Skip
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The front fan on my case hasnt had more than a 2F degree diff on my cpu HOWEVER it keeps my hard drive a lot cooler and I notice a little improvement in hdd dependant apps.
Nothing's broken until you choose not to fix it.
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Thank you all for sharing your experiences.
Jam's post was especially very interesting.My exhaust fan (in the back) was recently making loud tractor noises so I lubricated, I guess it should be replaced soon- hence I wanted to know how many I should buy.
The PC has worked very well for the past 3 years except the 300W ATX PSU which unusually died around 6 months ago & was replaced with a 500W version. I also had the same loud noises at the time which did not reoccur & hence I didn't investigate. Now that I think, there is a possibility that the malfunction in the case fan has caused high temperatures in the PSU.
I guess I have to figure out, how to monitor the temps & compare them with similar systems.
On the issue of noise I'm with cliffpage, I won't add any more fans unless necessary.
Regards
Positron
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Not really relevant to the fan issues, but I just have to add my 2 cents about cooling.
I recently purchased a Corsair Nautilus 500 water-cooling unit and my MB and GPU temps are all down by about 20C. There is no additional noise. Water-cooling is the way to go.
I should also add that I freed up a lot of valuable space for air circulation by removing the HUGE heatsink from the CPU. The water block is so much smaller.
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