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Old 04-08-2005, 01:08 PM   #1 (permalink)
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Default Re: Help with Fan setup

I need to bring my CPU temp down. It's within "safe" tempuratures but I would like it to be operating under 50C during full load.

I have, of course, a CPU fan with heatsink and two 80mm fans setup in the case. One pushes hot air out of the back of the case - just below the PSU fan - while the other is setup to bring cool air in and point it directly at the CPU (side of the case). I just ordered some round IDE and Floppy cables to help airflow.

My HD's are running hot IMO, and they're probably contributing heavily to the build up of heat inside the case. Should I buy fans that pull their hot air out the front of the case?

There's a lot of different products out there, so I was hoping someone has some experience and could offer advice about what products to use and where.

I really don't want to go the water-cooled route since I'm not going to overclock - unless I can really bring down the temps using just fans.

Can anyone make some more suggestions for me?

Thanks.
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Old 04-08-2005, 02:12 PM   #2 (permalink)
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what was the temperature, as when I was on stock my cpu was running at 53*C on full load after 30 mins
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Old 04-08-2005, 02:17 PM   #3 (permalink)
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A front intake fan should lower your temps as well as cool your HDDs, as would an additional exhaust fan, either in the rear or top.
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Old 04-08-2005, 02:53 PM   #4 (permalink)
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Quote:
Originally posted by Trifid
what was the temperature, as when I was on stock my cpu was running at 53*C on full load after 30 mins
Well, I'm using Motherboard Monitor 5 and its saying that I'm approaching sometimes 55 and 56C after full load for awhile.

MBM5 seems to be off a bit though as it fluctuates a lot.
I'm considering getting some hardware that will monitor my temps physically/directly.
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Old 04-08-2005, 09:25 PM   #5 (permalink)
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Well the fans that are at the front bottom, will not lower your temps. If they do, its vety minute. Those are strickly HHD. Since they are so isolated, behind the HDD containers, then the HDD themselves, the air cant travel very far. What makes air cooling count. Is the positioning of the fans, the size of them, and their CFM. When you look at a fans specs, you will see RPM, size of the fan, and then its CFM. CFM= cubic feet per second. The higher the CFM the better results you will have, since its pushing more air at a high velocity. What makes air cool, is its velocity, so the faster air moves, the colder it is. Just like when you breath on your hand. Faster you blow, colder it is.

Overall, the positioning of your fans will predict better results. Alot of people think, just becuase they add a few fans, that its going to do something. Always keep the back fans as exhaust, while the front is intake. The best place for intake is on your removable side panel. Thats air blowing striaght to your mobo. No resistents at all. If you want, you can drill holes on top of your case, witch will work best as exhaust. You always want slightly more exhaust then intake. Thats because of the heat exchange. Once the cold air from your intake contacts your system, its going to turn warm. So you need exhaust to remove that once cold air that turned warm out ASAP. If not, then that warm air, is just going to conduct itself back into your system. Witch will result in a negitive effect. Thus your cooling system will be useless.

I have 5 120mm fans, witch all of these fans are 125-CFM. Then i have 1 80mm fan as my cpu fan. This weekend i might MOD a 120mm fan with 108-CFM as my cpu fan. My 80mm has 84-cfm, thats extremely good for an 80mm. For air cooling, you want fans that produce at least 50-CFM. Thats hard to find on a 80mm scale. Thats why 120mm are ideal. But of course the higher out-put fans you have, the more noise your going to receive. Thats why you need to position your fans currectly.

If your fans are positioned currectly, you can have lower out-put fans, with better results then higher out-put fans arranged differently. With my air cooling, at IDLE my temps are 20 degrees celcius. When my window is open, its around 15-18 degrees celcius. On cold days, i have hit 12 degrees celcius.

For silent 120mm fans i suggest these. Its a stealth fan, with 53CFM.
http://www.frozencpu.com/fan-38.html

For some high out-put fans, i suggest these. This has 115CFM, very good fan.
http://www.frozencpu.com/fan-157.html

Heres another with 125CFM, i use these.
http://www.frozencpu.com/fan-22.html

This is the 80mm fan that has 84CFM i use. Alot of people here use these also. Its the best 80mm fan. I suggest using that as your cpu fan, this will lower your temps greatly.
http://www.newegg.com/app/ViewProduc...999-612&depa=0
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Old 04-08-2005, 09:25 PM   #6 (permalink)
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Well the fans that are at the front bottom, will not lower your temps. If they do, its vety minute. Those are strickly HHD. Since they are so isolated, behind the HDD containers, then the HDD themselves, the air cant travel very far. What makes air cooling count. Is the positioning of the fans, the size of them, and their CFM. When you look at a fans specs, you will see RPM, size of the fan, and then its CFM. CFM= cubic feet per second. The higher the CFM the better results you will have, since its pushing more air at a high velocity. What makes air cool, is its velocity, so the faster air moves, the colder it is. Just like when you breath on your hand. Faster you blow, colder it is.

Overall, the positioning of your fans will predict better results. Alot of people think, just becuase they add a few fans, that its going to do something. Always keep the back fans as exhaust, while the front is intake. The best place for intake is on your removable side panel. Thats air blowing striaght to your mobo. No resistents at all. If you want, you can drill holes on top of your case, witch will work best as exhaust. You always want slightly more exhaust then intake. Thats because of the heat exchange. Once the cold air from your intake contacts your system, its going to turn warm. So you need exhaust to remove that once cold air that turned warm out ASAP. If not, then that warm air, is just going to conduct itself back into your system. Witch will result in a negitive effect. Thus your cooling system will be useless.

I have 5 120mm fans, witch all of these fans are 125-CFM. Then i have 1 80mm fan as my cpu fan. This weekend i might MOD a 120mm fan with 108-CFM as my cpu fan. My 80mm has 84-cfm, thats extremely good for an 80mm. For air cooling, you want fans that produce at least 50-CFM. Thats hard to find on a 80mm scale. Thats why 120mm are ideal. But of course the higher out-put fans you have, the more noise your going to receive. Thats why you need to position your fans currectly.

If your fans are positioned currectly, you can have lower out-put fans, with better results then higher out-put fans arranged differently. With my air cooling, at IDLE my temps are 20 degrees celcius. When my window is open, its around 15-18 degrees celcius. On cold days, i have hit 12 degrees celcius.

For silent 120mm fans i suggest these. Its a stealth fan, with 53CFM.
http://www.frozencpu.com/fan-38.html

For some high out-put fans, i suggest these. This has 115CFM, very good fan.
http://www.frozencpu.com/fan-157.html

Heres another with 125CFM, i use these.
http://www.frozencpu.com/fan-22.html

This is the 80mm fan that has 84CFM i use. Alot of people here use these also. Its the best 80mm fan. I suggest using that as your cpu fan, this will lower your temps greatly.
http://www.newegg.com/app/ViewProduc...999-612&depa=0
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