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Old 09-19-2018, 04:22 PM   #1
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Default CPU heatsink upgrade

I've got a compact PC which I installed an Intel core 2 quad Q9100 in using the stock heatsink and a better fan.

The attached photo shows the limited space I have.

I would like to install a better heatsink or fan if I cannot fit a better heatsink as the temp runs around 167F when I have a few browser windows open and am doing things.

Would something like this work with adding a fan

Cooljag SEA-B Intel Pentium M CPU Cooler (JAC09FC) - Socket BGA479/PGA478 - FrozenCPU.com
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Old 09-20-2018, 04:31 AM   #2
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Default Re: CPU heatsink upgrade

The stock heat sink and fan should be fine without overclocking. You sure you seated it and applied thermal paste correctly?

But at any rate, if it's designed for that CPU then it should fit properly. Your CPU is of socket PGA 478 and that heat sink is too.

But that's not what you're asking.

That heat sink doesn't seem to have a fan base. Seems like a passive cooler (without a fan) by design. But that doesn't mean you cannot fix a fan on it. You can put a fan on it and find a way to fix it like tying it to the bolts with any heat resistant threads. There should be fans out there that can cover the surface very well and have connectors for which the motherboard has pins to power.

Just make sure that what the description says of the supported socket is correct and it fits the CPU correctly. Also make sure you apply the thermal past correctly.

I hope that's what you're asking about.
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Old 09-20-2018, 09:32 AM   #3
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Default Re: CPU heatsink upgrade

LOL, for a core 2 quad with original heat sink, i'd bet that it's just the thermal paste that has gone bad. If you're planning to replace the heat sink anyway, you're going to need new thermal paste. might be a good idea to get a tube and test it out before you buy a new heat sink.
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Old 09-20-2018, 09:49 AM   #4
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Default Re: CPU heatsink upgrade

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Confused the OP with someone else. I agree with Cortb. You should try thermal paste first. Also, try removing the dust and clean everything with compressed air.
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Old 09-20-2018, 08:26 PM   #5
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Default Re: CPU heatsink upgrade

Thermal paste seems ok as the dual core CPU it came with didn't run as high of a temperature and I just recently changed it to a quad core.

Those are 40mm fans by the way.

Affixing a fan to it will be easy.

Just a matter of finding two or four screws that will fit between the heatsink fins like I did with the other two heatsinks shown in the picture.

Now if the motherboard power connector was not in the way I could make a duct to go to the heatsink and one of the three 60mm case fans.

My thinking is that the same fan blowing air over more of a heatsink might draw out more heat.

Works ok stock, but I like my processors to run as cool as possible.

Now would air flow properly through the fins based on how they are spaced?
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Old 09-20-2018, 08:47 PM   #6
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Default Re: CPU heatsink upgrade

What makes you think the paste is fine? If you recently swapped processors, it's all the more likely that the paste needs replacing.

Also, please read this: How To Ask Questions The Smart Way
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Old 09-20-2018, 09:30 PM   #7
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Default Re: CPU heatsink upgrade

I had figured it was fine because it worked with the original processor.

It is the white type and is not hardened at all.

Whoever installed it originally used a lot of the heatsink grease thinking that was best I guess.

Then again that small of a heatsink may not have been made for anything but a dual core processor or it may have been designed to keep it from getting too hot versus optimum cooling.
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Old 09-21-2018, 12:55 AM   #8
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Default Re: CPU heatsink upgrade

You said you are seeing a temperature of 167 degrees.

What temperature do you think you should be seeing?
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Old 09-21-2018, 01:13 AM   #9
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Default Re: CPU heatsink upgrade

Doesn't matter if it's not hardened. Whenever you change processors you should wipe the old one and apply again.

My recommendation is: dust the computer, clean the processor and apply paste again. Other than that, there is not much else to say, unless there is some program in the background forcing your processor to be at 101% at all times, there is no reason why it would be hot. Also, as Univac_Man implied, I think, 167 F is not that hot.
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Old 09-21-2018, 03:05 AM   #10
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Default Re: CPU heatsink upgrade

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Originally Posted by Smart_Guy View Post
The stock heat sink and fan should be fine without overclocking. You sure you seated it and applied thermal paste correctly?

If you believe the thermal paste is okay (by applied correctly I mean new paste too), then just make sure the heat sink and the fan are seated correctly. It's highly recommended (if not necessarily) to apply thermal past "correctly" in your case. Even if it's not it, new thermal paste in new CPU installations is a common ground with computers.



I see that 167F is high for just browsing with light work. That's ~75C. With heavy load things "might" get ugly.


That linked heat sink looks cool, tho, if you wanna overclock and can fit a good fan on it. I heard C2D quad cores are good over clockers that can support some of the late video cards and games. Copper is a good heat conductor/absorber.
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Old 09-21-2018, 08:28 PM   #11
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Default Re: CPU heatsink upgrade

It s not so much a temp I an expecting to see versus wanting the processor as cool as reasonably possible as I believe that the cooler something is the longer it lasts.

Of course I'm used to motherboards where there's space enough to install a larger heatsink for better cooling.

I'll pick up some new thermal grease tomorrow.

Unfortunately I see nothing in BIOS that would allow for overclocking.
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Old 09-22-2018, 05:14 PM   #12
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Default Re: CPU heatsink upgrade

Tried new heatsink grease and it didn't help.

I'll order that heatsink and figure out how to install a fan on it.

I did need some heatsink grease anyways as I was out and like to keep some on hand.
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Old 09-27-2018, 12:37 AM   #13
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Default Re: CPU heatsink upgrade

I got the heatsink installed.

It is pretty much like the original only the fins are a bit taller.

I've got the fan mounted. Just used the original mount for the original heatsink and pressed the sides in so that it is friction fit for now until I can think of a better way.

Temperature is a good 10F cooler and takes longer to increase in temperature from when the computer is first turned on when doing what I had the computer doing when I took the initial temperature reading.

Depending on the program I use I'm either at 132F or 142F.

I tried looking online at the processor specs to see if there's any temperature offset, but didn't see that spec listed as one of the programs allows the temperature offset to be entered so the temperature display is correct.

I did get it a little cooler and it isn't so fast to heat up so I'm satisfied.

I could do much better if I wasn't limited to a 40mm fan and a 60mm to 40mm fan adapter would actually fit.
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Old 09-27-2018, 02:32 AM   #14
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Default Re: CPU heatsink upgrade

That's a great improvement. To make sure, do an all-core stress test with a software like CPU-Z for 10 minutes or so and see temp. behavior. Monitor it live for a moment to see how hard it spikes. If it doesn't go hard, you can come back after the 10 mins. Make sure the temp. monitor has a graph that keeps history to know the change consistency.


Good luck.
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Old 09-27-2018, 07:22 AM   #15
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Default Re: CPU heatsink upgrade

I'll try that today.

Would really like to install a fan with higher airflow, but that would mean a 60mm fan and no adapter would fit given the extreme close proximity of the heatsink to the RAM plus the adapter would have to be 10mm or less in height.

Perhaps I could get a small blower with tach and use that so long as the blower is 20mm or less in height and the inlet is 40mm or less.
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Old 09-27-2018, 08:29 AM   #16
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Default Re: CPU heatsink upgrade

The current fan you managed to fit might as well be enough. Consider the airflow of the case/chassis as well. If you did the tests with the cover open, then managing case's airflow is not the issue.


All in all, stress testing should clear things up for now.
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Old 09-27-2018, 02:40 PM   #17
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Default Re: CPU heatsink upgrade

The case was closed, but it has three 60mm fans on the bottom to move air out of the case.

The air is a little above room temperature.

Sure the fan may be enough, but I always like things to be as cool as possible.

Doing the stress test with CPU-Z I am at 149F or 158F depending which program I look at.

Will let it run a bit longer and see what temp I am at.
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Old 09-27-2018, 04:57 PM   #18
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Default Re: CPU heatsink upgrade

I ran an online stress test that does 64 threads max and 100% load max.

cpux.net/cpu-stress-test-online

Temperature rose to 171F.

That is either

the fan being so close to the case top reducing airflow

OR

the fan picking up heated air inside the case.

So I put an approximate 60mm square hole in the case where the fan inlet is so that the fan had a way to draw in room temperature air and so it would not be restricted by anything.

Rerunning the test now. Will report back when the CPU has reached its highest temperature.

That said I could move the hard drive (power cable is over part of that hole) and enlarge the hole to where I can mount a 60mm fan which will blow down on the heatsink.

EDIT:

Been a few minutes and it is steady at 151F.

EDIT 2:

Here's a photo of the final results
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Old 09-28-2018, 02:04 AM   #19
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Default Re: CPU heatsink upgrade

Can't get much better than this. Seeking the absolute cool temp. will only make you a researcher with much harder life, not a user. Getting within the common safe range is the way to go. With no overclocking in mind, this is the typical result to keep. Just make sure you get the max clock speed with CPU utilization. Look up the right clock speeds with different combination of cores working at the same time and make sure you get it under the clock field to get what the CPU was made to give.
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Old 09-28-2018, 06:54 AM   #20
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Default Re: CPU heatsink upgrade

Unfortunately there's nothing in BIOS that would allow to adjust anything related to overclocking.
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