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Old February 12, 2009, 01:39 AM
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Default How often do I have to replace CPU Heatsink, and Fans?

I run my PC nearly 24/7.
In I have two Noctua NF12 running, one for heatsink and one for cooling, and Noctua NH U12P 1366 heatsink. The average temperature for Cores is about 47C with the ambient temp 39C. Since I use Antec P182, it doesn't let the heat out well. I plan to get more Noctua fans when the price comes down.
Anyway, what's the average life span for a CPU heatsink and 120MM fan assuming that the computer is running 24/7.
Thank you.
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Old February 12, 2009, 04:42 AM
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Originally Posted by appplejack View Post
I run my PC nearly 24/7.
In I have two Noctua NF12 running, one for heatsink and one for cooling, and Noctua NH U12P 1366 heatsink. The average temperature for Cores is about 47C with the ambient temp 39C. Since I use Antec P182, it doesn't let the heat out well. I plan to get more Noctua fans when the price comes down.
Anyway, what's the average life span for a CPU heatsink and 120MM fan assuming that the computer is running 24/7.
Thank you.
There isn't really any limit on HS's...that i know of. I say "that i know of", because heatpipe HS's haven't really been popular for that long...so i can't say for sure if the gas inside eventually weakens or evaporates as in a cars' A/C system. Fins, bases, and everything else should outlast most any processor. Fans... no set time period(i've never "worn-out", or killed a HS..just the fans). The quoted MTBF from manufacturers is pretty meaningless, so the only true indicator of when it's time to change a fan is, if/when it starts rattling, squeeling, ticking, smoking , or seizes. If you're worried....for your own peace-of-mind, replace the fans between every year-two years, and hopefully you'll avoid a CPU-stressing fan death. It's probably worth spending $20-$30/year on fans, to keep your prized CPU purring along at a decent temperature. Also, realize, that you can buy fans that either arrive(by courrier/mail) DOA..or can and will die way before their time. It's always wise to have a few spare fans(of the proper size) kicking around just in case a fan unexpectedly kicks-the-bucket. Good 120mm ball-bearing fans can last 5+years...np. Oh.. and keeping them clean, by blowing or brushing the dust off/out of them can extend their lifespan. Using low static-pressure fans in highly resistive situations, can kill a fan in a matter of months... so use the proper fan, for the proper application.
Sorry for the novel. GL
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Old February 12, 2009, 05:21 AM
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Only thing I can add to that is to periodically brush/clean out the fins of your HSF as well.
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Old February 12, 2009, 05:38 AM
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Only thing I can add to that is to periodically brush/clean out the fins of your HSF as well.
It's in my post.
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Old February 12, 2009, 05:57 AM
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Its the stuff between your cpu and heatsink (Thermal Interface material) that should be replaced every 12-24 months depending on the type.

Tanker has got it covered on all the rest.

EE

Last edited by Eagle Eye; February 12, 2009 at 10:34 AM.
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Old February 12, 2009, 06:02 AM
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the only true indicator of when it's time to change a fan is, if/when it starts rattling, squeeling, ticking, smoking

Really? I guess I should start replacing those fans then, I thought that the smoke created a nice visual effect and allowed one to see how well their airflow worked.
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Old February 12, 2009, 07:53 AM
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Really? I guess I should start replacing those fans then, I thought that the smoke created a nice visual effect and allowed one to see how well their airflow worked.
Well, yes...it does make for a nice show, and can help with determining airflow paths ...but you gotta enjoy it quickly, because i guarantee you won't find smoke rolling out of your CPU as amusing and helpful.
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Old February 12, 2009, 08:48 AM
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In case of 24/7/365 operation I would:
1. Install air filters on all entries in the case.
2. Clean filters every 6 months
3. Replace fans every 2 years.
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Old February 12, 2009, 12:48 PM
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3. Replace fans every 2 years.
I see no reason to replace fans if you've bought high-quality ones like the Noctuas the OP is running.
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