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VRM area heat sink

post #1 of 17
Thread Starter 
Hellow, i have years not posting here lol!!!

I have the Ga-970A-d3 with 4-1 vrms. No heatsink of course to make the things bad.

I have been ocing the Ph2 X4 950 using only multiplier to 3.8ghz at stock voltage, nb at 2.4 with 1.175v.

I made heat sinks for the vrms using an old Celeron 900mhz socket 370 heatsink. Cutted and put in place using white thermal grease., they hold in place with the help of a small board metal chip, i insulated it with a small piece of kelloggs cardboard.

Is there a way to monitor vrms temps?? I use speedfan, temp3 is onboard sb i belive.

Thanks smile.gifredface.gif





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post #2 of 17
Is your mobo mounted vertically?

If it's mounted vertically then it would not be very safe, since the heatsink can fall off and short something.

Usually budget mobos don't have thermal sensor on VRMs, therefore you probably need an Infrared Thermometer.
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post #3 of 17
The absolute first thing to do, no excuse, is dust and clean that computer! If you didn't clean, meaningn ot only dust but in this casealso clean w 90pct or higher iisopropyl alcohol, the VRM's before you applied them, you are not going to seeaanywhere near the temperature drops you could.

I have had success using homemade hacked up heatsinks, but it's important to remember that their efficacy is dependent upon airflow directly over or across them. Stick a 60-80mm fan over them, and you will have probably the best temp drop you are going to get without spending any money.

If they don't have a temp sensor in the board, the only accurate AND consistent measurement method I've found is using a calibrated IR thermometer. A temp probe means that you will sacrifice some degree of cooling for the ability to measure temps, and as small as VRM's are, you'll essentially cover an entire one with a probe.

IR thermometers can be had cheap, $10 for a basic one, and I think they're a must-have item in any cooling enthusiasts toolbo.
   
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post #4 of 17
Thread Starter 
I did a test oc to 4ghz, and upped the voltage .15v.

The sinks are doing their work, when upped the voltage, they got very hot to touch!, reverted to stock voltage and 3.8ghz on multi only, they are hot, but not that much!!

Now is night and cold because the rain, wow, how it was suffering while flying at 12pm lol!!!

CPU also got 4°C hotter...

I ran prime95 for 5 minutes each time.

Time for new cpu/ram/mobo...mad.gif
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post #5 of 17
A better board can make all the difference. Then again an x6 would be a nice upgrade as well.
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post #6 of 17
Thread Starter 
I already cleaned the pc, but need an air pistol for the small holes! the vacum cleaner works well.

Yes it is indeed vertical setup, i already took a measure if they fall off, they will bounce on a cardboard over the vidcard.

Well, if they are very hot to touch, then they must be working, now getting the fan will be tricky, no room for 80mm one, i will have to search for a 40mm or somewhat other way to trow air at them mmmm:rolleyes:
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post #7 of 17
Quote:
Originally Posted by CesarWilkins View Post

... Well, if they are very hot to touch, then they must be working ...

Efectivamente thumb.gif .

I just super-glue them so they never fall. Super-glue isn't as good a thermal conductor as thermal paste, but is still miles better than nothing (air) and works OK empirically.


dt-613808368219.png . . dt-613808713817.png . . dt-12138087182516.png
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post #8 of 17
I would use thermal paste, but keep one or two small corners free from the TIM, and apply a dab of superglue there. You get the holding strength of the latter with the thermal transfer of the former.
   
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post #9 of 17
Superglue cures very hard/brittle. Any hot/cold expansion/contraction will eventually weaken the joint. Thermal epoxy is a safer way to go.. and reasonably easy to come by. I've heard of people making their own by mixing epoxy and TIM but not sure I would trust it.
post #10 of 17
Thermal epoxy is a semi-permanent solution
http://www.newegg.com/Product/Product.aspx?Item=N82E16835100013
 
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