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View Full Version : Pentium "D" overheating.

Seth
07-07-2006, 06:04 PM
Hello.

I'm working on a overheating Pentium "D" 3Ghz Dual Core. The computer was custom built.

The symptom was the computer would constantly shut down on it's own. I got it back to my shop (a room in my house:) ), opened the case and booted to the bios. Fans were fine, and I watched as the processor temperature began to quickly climb to 95 degrees C.

Here (http://images.tigerdirect.ca/SkuImages/gallery/large/TC3G-2028-d.jpg) is a picture of the pathetic heatsink to mobo clips. They're built cheap and fail to provide a proper contact between the cpu and the heatsink. Anyway, a small plastic piece on one of the fasteners was broken, causing even less proper contact between the cpu and heatsink. I also noticed that way too much thermal paste was used, as gobs of it protruded out from the sides of the cpu.

I cleaned it all up and applied the proper amount of paste. This alone dropped the temperature to 75 degrees C. I still had the broken clip problem though. While watching the temperature, I gently pressed on the fan frame to provide even and proper pressure between the heatsink and cpu. The temperature immediately began to drop and settled on 55 degrees C.

Now I have to replace the crapola heatsink to mobo fasteners. I'm sure I can get the OEM clips, but I would like to get third party, as anything would be better than the junk clips Intel provides. Anyone know of any?
Seth
07-07-2006, 07:31 PM
Update:

Because of the poor design, even new clips aren't going to hold the heatsink to the mobo properly. I'm going to remove the clips from the heatsink sink base, remove the mobo, and use small nuts and bolts to fasten the heatsink to the mobo.
Pi rules
07-07-2006, 09:15 PM
Are you sure it was attached correctly? My stock fan (with the same CPU model) worked quite well and gave nearly the same idle temp as my new fan (Thermaltake Blue Orb II) does. Make sure to twist the top of the clips to lock them. My guess is that they were not locked and stayed too loose.

If it doesn't help, you may just want to get a new heatsink and fan as long as the customer agrees.
Seth
07-07-2006, 09:24 PM
Are you sure it was attached correctly? My stock fan (with the same CPU model) worked quite well and gave nearly the same idle temp as my new fan (Thermaltake Blue Orb II) does. Make sure to twist the top of the clips to lock them. My guess is that they were not locked and stayed too loose.

If it doesn't help, you may just want to get a new heatsink and fan as long as the customer agrees.

Clips are in fine other than the broken one. I'll just order some new clips.

Third party cpu temps now show at 60 under load, and 50 idle. Holding down the heat sink to compensate for the broken clip drops both those temps another 10 degrees. So it's all good now:)
dale@fcg
07-07-2006, 09:28 PM
All's well that ends well.
Pi rules
07-07-2006, 09:30 PM
Good luck! :)

(just noticed my post number :laugh:) Reminds me of something...