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Power Supply is HOT!

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Name: Ryan
Date: March 10, 2003 at 17:36:20 Pacific
OS: na
CPU/Ram: an
Comment:

I just bought a new 400w power supply to replace my defunct 300w supply. With my old power supply my cpu(pentium 4 2.53GHZ) temp was never more than 112F. With the new power supply it is usually 110F and gets up to 125F with use. The powe rsupply is located about an inch above the processor and i think it is radiating heat to my processors heatsink which in turn heats up the processor. What can I do other than buy a bigger heatsink for my processor? Is there a way to insulate the power supply? Maybe a piece of wood between it and the CPU?



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Response Number 1
Name: chuck
Date: March 10, 2003 at 17:56:34 Pacific
Reply:

I dont recommend a piece of wood since its extremely flamable. You should maybe stick some kind of aluminum plate between it since aluminum absorbs heat, or just simply buy a new PSU and sell the old one.


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Response Number 2
Name: Ryan
Date: March 10, 2003 at 18:05:02 Pacific
Reply:

Aluminum would only help to transfer the heat closer to the CPU. And i really don't want to get a new PSU.


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Response Number 3
Name: Goldenknob
Date: March 10, 2003 at 20:08:16 Pacific
Reply:

get a larger case...

I don't see a problem with haveing a piece of wood between them...if something is hot enough to catch it on fire then you relly have some problems and besides if it's that hot then your wire shields would melt first...


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Response Number 4
Name: plyduster
Date: March 10, 2003 at 20:32:39 Pacific
Reply:

All you need is one spark to ignite that piece of wood. Putting a piece of wood in your computer is a very bad idea!!!

Its better to lose your computer to heat, rather than losing your home to a fire.


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Response Number 5
Name: Simon
Date: March 10, 2003 at 20:55:50 Pacific
Reply:

As a suggestion......

Could it be that now you are using a more powerful PSU, it's able to more efficiently power your processor, and thus making the CPU work harder resulting in the increase in heat ?

Where as with the 300W PSU it's trying to run everything and therefore not supplying the CPU (and everything else on your system which communicates with the CPU) with the optimum amount of power.

Maybe, maybe not.

But I don't think that the CPU is really picking up THAT much heat simply radiating from the PSU - which is why I think the CPU is now being able to work harder.

Hope this helps

Regards

Simon


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Response Number 6
Name: borelli34
Date: March 10, 2003 at 21:23:18 Pacific
Reply:

Ryan,
First, you may want to check to see if your core voltage is correct. I don't know of a processor that gets that hot (before the change even) that lasts very long and I've been an A+ certified technician for over 12 years now. The processor can be heating up due to too high of a voltage setting but will still function properly, but only for so long. I would consider a case modification by adding a case side cooling fan as well. That's just my recommendation.

borelli34


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Response Number 7
Name: Ryan
Date: March 11, 2003 at 07:48:09 Pacific
Reply:

I tried the wood idea and i didn't help. I just felt my power suply and isn't really that hot. The Core Voltage is about 1.5V. Everything else looks normal except the -12v line which regesters as -10.86. My board has one temp sensor under the processor and one on the board close to the processor. The Board one reads 107F max but the processor has gone up 123F under use. For example, if i start up my computer and let it sit the CPU temp stays at about 100F. If i play a game it almost emidiatly goes up to the 120s. Once i stop the game it will drop down to 110F or lower in about 2 minutes. Durring all this the board temp never gets above 110F. The only thing i did before replacing the power supply was to remove the CPU heatsink and add some CompUSA thermal gel. I'm pretty sure the heatsink went back on ok but i'll check. Anything else that would be causeing this much heat?


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Response Number 8
Name: Goldenknob
Date: March 11, 2003 at 08:09:08 Pacific
Reply:

ok there is your answer...did you get a compusa brand of PUS? if so take it back and get a different brand...I had gotten one of thoes and it made my processor run 15-20c hotter than my other psu did... so I went ahead and ordered one off of the net...
and normaly if you have more than enough power in you psu then you cpu can run correctly and will run cooler because it's getting enough power and not having to squeeze everything it can get into processing power...


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