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new build: CPU temp unstable - HSF installed wrong?

acordeon

Junior Member
Just did my first mobo + CPU replacement, to an i5-650 w/ an ASUS board. Using the standard heatsink+fan. Also installed SSD and other new components.

In general things seem that have gone fine. Installed Win 7, system runs, and is fast. Problem is that CPU temps seem to be shooting up too quickly under load. Either that or temp. detector is wrong.

Haven't done any rigorous testing, but:
* seems to idle around 38-40 C
* normal light usage seems to bump it up to 45 C v. quickly
* even very short periods of heavier load will bump it up to 55 or 60. Got up to 62 or so while I was watching, while extracting a 500MB zip file which took a matter of a few seconds.
* it's not just the temps it's hitting, but the speed at which they're rising that worries me. Under load, it jumps into the 60's in the blink of an eye.
* am using both Speedfan and Asus' PC Probe to monitor temps, and they agree with each other within a degree or 2
* the CPU fan is turning, and reported RPM is round 2000
* I've seen high temps even with the case open, so it's not a case airflow issue

I've been led to believe that these temps are higher and more uncontrolled than they ought to be, and that the most likely culprit is a mis-installed HSF.

Here's what I did: I installed the stock HSF w/ the mobo outside of the case, and pressed each pin pretty hard. Not every pin made a loud click, though - I think two of them did, while the other 2 did seem to seat in the board. I again pushed the other 2 pretty damn hard but didn't get the same click.

When I turned the mobo over and looked at the pins, it seemed all of them were seated, although there was a difference. There's a white outer part which hooks onto the back of the mobo, and then a black spindle inside that. The white was all the way through for all pins. In a few of the pins, it looked like the black spindle hadn't extended as far through the board as in the others. I don't know if it was the same 2 pins that didn't give me a click, but it could have been.

Does this sound like an incomplete install?

If so, now that it's in the case, with everything attached, I'd really rather not have to remove the mobo again unless there's no other choice. I'm new to this, and slow. But I also don't want to damage the mobo by pressing too hard while it's in the case. Advice?

Thanks!
 
At the very least you probably want to take a really close look at the pushpins right at motherboard level and see if any of them look different than the others. Worst case, pop 'em and reseat them all as best possible.
 
You gotta make the pins "click." It can help to remove the motherboard and install the heatsink while holding the board in your hands. The board will flex a bit.
 
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