Heat sink and fan replacement question.

[Lemon law]

Right now, I have the stock intel heat sink and fan that came with my E5200 processor.
And at least at stock clockings, according to real temps, I idle at 37C and go up to 55 C
at full load after 10-15 minutes of running of primes95. And then it takes almost 4-5 minutes to get down to 37 C after the load is removed.

Meanwhile the fan, an 84MM jobbie, only runs at 988 rpm, regardless of heat. Maybe I can find a way to run the fan faster, as it is, it hardly makes any noticeable noise while moving little air.

And yes I have read quite a bit about all those wondrous replacement heat sinks and fans I can add if I want something that is huge, heavy, expensive, and cantilevered six inches above the motherboard. And also require remounting the CPU and sometimes the mobo to allow bolt through kits.

My question is why replace the heat sink when they really should make a just a bigger fan, that simply moves more air at the same fan RPM. Thus moving much more air while making the same low amount of noise.

Does anyone just make a bigger replacement fan for that stock intel cooler?

 

[zagood]

Check in the hardware monitoring section of your BIOS. That fan runs way, way faster than that. Something like 2500rpm.

That being said, the e5200 hsf is a cut-down version of the regular Core2 cooler. The original isn't a very good cooler, the e5200 one is worse.

And please, keep to one thread.

 

[jjmIII]

55C is plenty cool for full load..

 

[vj8usa]

The stock cooler does speed up, but only if it needs to. I used it for a while, and it got pretty loud after being under load for a while. Seeing as to how your CPU's completely fine running upwards of 70C though, it's just not getting hot enough to speed up. Maybe you can set the threshold in your BIOS?

 

[Lemon law]

The original question I ask is still not addressed, namely why not just replace the fan with a bigger one to reduce noise and heat in the general case.

And in terms of the zagood assertion of keeping it to one thread, its a separate problem especially since I am also having problems with my wife's computer.

And my wife's problem is that she has a pentium dual core 915 with a pressler core, that is running far too hot. Its a 95 watt processor, and I am torn between getting a better heat sink but would prefer a bigger removable fan, or I could just bite the bullet and just replace it with a E5200 that is listed as compatible with her mobo. She definitely does not need or want to overclock, but her processor idles at 50C and often goes up to 80C under any kind of a load.

 

[zagood]

Original question - no, there is not a larger replacement fan available, and even if there was it would be fairly useless - the heatsink itself isn't very effective.

Please re-read my other post and look into your bios settings.

 

[VirtualLarry]

Originally posted by: Lemon law
And my wife's problem is that she has a pentium dual core 915 with a pressler core, that is running far too hot. Its a 95 watt processor, and I am torn between getting a better heat sink but would prefer a bigger removable fan, or I could just bite the bullet and just replace it with a E5200 that is listed as compatible with her mobo. She definitely does not need or want to overclock, but her processor idles at 50C and often goes up to 80C under any kind of a load.

If her motherboard will accept an E5200, go for it! It's worlds better than a press-hot.

 

[Lemon law]

Well, I may have partially answered my own question, I have used easy tune to double the fan speed from 885 RPM to 1924 RPM, with no effect on idle temperatures of 37 C. Under load for 15 minutes using primes95, the faster fan speed reduced load temps from 55C down to about 50 C. And once then load was removed, the faster fan speed seems to reduce the time it takes to get back down to 37 C especially at the upper end. In terms of fan noise no audable difference over the noise of another simple case fan.

And I have various CPU temperature monitoring utilities, Real temps and PC wizard agree and are the figures cited, and speed fan reads 5 C higher and easy tune 6 reads 3 C higher. Which figures can I trust?

 

[Lemon law]

Originally posted by: zagood
Original question - no, there is not a larger replacement fan available, and even if there was it would be fairly useless - the heatsink itself isn't very effective.

Please re-read my other post and look into your bios settings.

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OK Zagood, I did just that, the gigabyte bios options are not exactly a model of informative, but at least I tried. On the bright side after making changes, it at least booted, but I got a persistent steady buzz from the mobo, and I then reset to bios optimized defaults for the next boot which made the warning go away. And fan speeds at least jumped to 2000 rpm with no need to use easy tune.

 

[cusideabelincoln]

$20 is expensive? You can get awesome heatsinks for about $20, although you really don't need to as your temps are acceptable.

And when it comes to heatsinks, generally bigger is better.

 

[jjmIII]

Original question: the OEM Intel fan is a proprietary design, and you can't just screw a new fan to it like an aftermarket heatsink.

The Thermalright XP-120 is on sale. I say get an OEM e5200 for her, and put your Intel HSF on it. Get the XP-120 for your chip, and OC away!