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Can a new PSU reduce temperatures? It seems to have.

post #1 of 7
Thread Starter 
I recently replaced my eXtreme 650w coolermaster after 5 years of use with a 630w be Quiet for both noise and upgrade reasons (wanting to go crossfire 6870 soon and couldn't risk the eXtreme blowing up!), my system is now inaudible in idle and very quiet on load which is great thumb.gif, should have really done this sooner.

Onto the question though, I've noticed with the new PSU my GPU temperatures have dropped by 10-15c, going from 45c idle and 90c load, to 30c idle and 65-70c load, which considering I'm using a reference card (although an Icy visions is on it's way today) is fantastic, but all I changed was the PSU, and I've ruled out airflow and ambient temperatures due to the eXtreme never really getting hot (I had to replace the fan after it died with a 120mm delta hooked to a fan controller, yes the PSU was that old).

So can a new PSU really affect temperatures not due to airflow/ambient temperatures, better voltage regulation or something? I'm going to try overclock my 1090T again after not being able to pass 4ghz safely before due to having to go up to 1.7v, I have a feeling the new PSU will help.

Cheers!
Edited by eltocliousus - 4/13/12 at 5:02am
post #2 of 7
Only thing I can think of is that the old psu was running hotter and filling your case with hot air.. Only logical explanation I can think of sir
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post #3 of 7
so, which is new? the gpu or the psu?
post #4 of 7
Thread Starter 
The PSU, replaced a five year old coolermaster eXtreme with the new Be Quiet modular ones, although I've ruled out ambient temperatures as the old PSU never got hot due to the delta.
post #5 of 7
Quote:
Originally Posted by ghostrider85 View Post

so, which is new? the gpu or the psu?

the psu I believe I think he typo'd on that post topic smile.gif
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post #6 of 7
Thread Starter 
Oh yes sorry, must have had a mind lapse, I meant PSU, I've edited the title.
post #7 of 7
I believe the PSU is new. And i'd think the same thing: heat generated by the psu. New one giver our less heat or gets rid of it outside the case.
I'd also take into account room temps and changes in the airflow in the case.


Edit: and then my post was too late. smile.gif)

Later edit 2:
I kept thinking about this and came up with some questions or ideas. While it may be plausible it still sounds strange.

1. Since you say you now got a modular PSU is it possible the air flow inside your case changed, ie. there is more air going to the video card, due to (better) cable management. On this note i was wondering (maybe some one with electronics knowledge can clarify) are all the cables coming out of the PSU generating heat?

2. Any factors like room temp, computer placement in the room (next to ac now as opposed to next to a heater maybe before) have changed.

3. Dust?

4. Again aimed at people with electronics knowledge: could the card have not been getting enough volts to the fan(s) for example, and thus cooling was inadequate.

If some one can clarify I'm interested in reading. This post made me curious a lot.
Edited by mablo - 4/16/12 at 12:34am
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