Temperature Confusion

Custom / CUSTOM BUILT
January 3, 2009 at 13:02:44
Specs: Microsoft Windows XP Home Edition, 2.423 GHz / 1791 MB
Hi. I have an AMD Phenom 9500 and am confused with the cpu temperature greatly. In my BIOS I leave the computer sitting idle on the PC health screen. The temperature usually goes up to 44-46C or, at the highest 50C. I then restart to find out it goes back to 42C and up. But when I boot to windows and use CPUID Hardware monitor at idle it sits at 36C with AMD Cool n Quiet since my CPU stays really hot with it off. So, Which one is right? I recently over clocked my 9500 to 2.423Ghz. and the temps are about the same. I am really confused...

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#1
January 4, 2009 at 02:56:12
The Bios temp is because it's giving you the direct reading from the heat sensor. Now rarely they can be off and there maybe a frimware update to correct the issue. To know first hand what the temp really is without relying on readings, you can always use a Infrared Pocket Thermometer, that would be your best choice.

If it's broke, then blow that sucka up!


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#2
January 4, 2009 at 08:51:01
I don't have one of those and I am kind of scared because this pc is like brand new, I made it myself and don't want it dying and stuff. My computer ran normally all day when I left it on so. I need help. I got one of those copper heatpipe heat sink and fans. I thought that would keep it cool. I also updated the bios adn it is an XFX 8200 mobo.

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#3
January 4, 2009 at 11:46:03
Your best bet is to contact XFX at this point.

The only thing i can suggest is that if this is a 3rd party heatsink how much thermal grease did you apply on the processor? All you should need is a grain size of rice in the center.

If it's broke, then blow that sucka up!


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Related Solutions

#4
January 4, 2009 at 12:58:55
AMD CPUs are thermally protected so it's almost impossible to overheat one to death. Your temp isn't extremely bad but it could/should be a bit lower. Does PCHealth also show the system temp? If so, what is it? If the case temp is high, the CPU temp will also be high. You're not gonna cool the CPU very well by blowing warm air on it. Do you have any case cooling fans installed? How many & how are they configured?

Here's the instructions for applying thermal paste:

http://www.arcticsilver.com/pdf/app...


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#5
January 4, 2009 at 16:00:40
I have a 3rd party heat sink its like the big massive ones with a fan and copper heatpipes. It had thermal grease but since some of it came off when taking off stock i reapplied some. the system temps are 27C idle 29 while playing a game. I have 2 120mm case fans, 1 in front blowing back and the other one blowing out in the back. I set everything up right so i don't see the problem.. The grease is like all over spread evenly...

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#6
January 5, 2009 at 10:36:58
"It had thermal grease but since some of it came off when taking off stock i reapplied some"

hmm...did you read the link about proper application of thermal grease?

if you ever re-seat your heat-sink/fan (HSF), you need to make sure you COMPLETELY clean the old thermal grease off of the HSF AND the CPU. This is best done using a LINT-FREE cloth and >90% rubbing alcohol.

if you merely rip off your HSF you get a bit of old paste on the CPU and a bit on the HSF. Then if you just squirt more paste into the mix and slam them back together, you create several problems. 1) there's probably too much thermal goop, so the layer is too thick AND some probably leaked out the side onto the motherboard. 2) you probably didn't get an even spread, leaving tiny air bubbles mixed into the thermal compound. This air does a horrible job transferring heat, and can also cause problems when the bubbles expand as they heat up.

As for which temperature to trust, BIOS readings are usually most accurate, but can be difficult to obtain under load because the CPU cools off when you reboot. Pick yer poison.


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#7
January 5, 2009 at 15:09:22
Another mistake on my end. Got to go get some thermal grease then... And how does putting a small bb size of grease spread it out? All I see on how to do it is "put a small dab on spread it evenly with a card."

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#8
January 6, 2009 at 15:59:40
some people suggest putting your finger in a plastic bag or covering it with saran wrap to spread the thermal grease.

personally, i don't think this is necessary, and even runs the risk of creating air bubbles.

I would put the HSF onto the CPU and move it in tiny (no bigger than a dime) sized circles. when you lock the HSF in place, it will be pushing down enough on the CPU to spread the paste evenly.


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#9
January 7, 2009 at 05:16:18
http://www.anavip.net/vb/f14.html

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