PWM too hot

Garyj881

Garyj881

Garyj881

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I have a Abit IP35-E motherboard and I'm getting very high PWM temps.

Is the PWM same as the norhbridge because I have heard of a bolt mod which is basicaly removing the plastic push pins from the NB heatsink and replacing with some nut and bolts (M4 I think).

My temp for my PWM at idle is 67°c and after a few minutes at fu load it goes to 120°c + and then the computer reboots and won't switch back on for a few minutes, I guess it has some sort of thermal protection.
 
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1.48v, Isn't there anything else I can do to lower the temps.

It takes that voltage to stay at 3.5ghz.
 
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Try dusting and reseating your cpu cooler? Overheating cpu can help the motherboard overheat as well. Maybe back off your overclock a little, even 3-3.2GHz is still good.
 
Garyj881 said:
1.48v, Isn't there anything else I can do to lower the temps.

It takes that voltage to stay at 3.5ghz.
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Lowering your vcore will lower your temps, see if you still get problems at stock speeds and vcore, and if you do then RMA.

If not, you need more airflow over the heatsinks. :)

Check the datasheet for your PWM chips, many run fine at around 100 degrees.
 
The more volts you are pumping through your CPU the harder the PWM has to work, hence it's getting so hot. You could try lowing your CPU clock and vcore and thus lower the stress and temps on the PWM. Either way I'd try resetting the heatsinks and applyig some good thermal paste. You could also have a go a mod, which was very popular with the IP35 PRO. There are bolt several mods on the internet to help with lowering the PWM temps for the IP35 PRO. Not sure how RMAing would pan out since Abit have gone bust.

Edit:- Here we go :) Hopefully you can do it it with the 'E', but just with each individual heatsink.

http://forums.overclockers.co.uk/showthread.php?t=17870562
 
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They've gone bust? :eek: In that case I'd be more inclined to run the board at stock as if a goes PWM chip goes pop then it's new board time...
 
I think so, either that or they have stopped making mobos..

Try the mod though, you should still be able to uses bolts even though haven't got the heatpipe :)

Edit:- from wiki, make of it what you will..

Universal Abit has announced that it will close on December 31st, 2008, and officially cease to exist on January 1st, 2009.[1] By 2009, Abit will no longer sell motherboards and may focus on CE field. Warranties will still be handled by Abit for another 3 years or so.
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So looks like RMAs may still be an option.
 
Get a little 60mm fan hovering over the PWM's and it will massively reduce temps. I did this with my IP35PRO...

IMG_0380.jpg


...temps when idle are 41c with the fan speed at around 40%. I have yet to see PWM temps higher than 70c when running Prime95 Small FFT's at 3.6ghz.

I didn't see any point doing the bolt mod on mine as the heatsink was getting very warm when loaded, and therefore doing it's job pretty well. I just redid all the paste on all the chips with Ceramique and wacked the fan on there. I also have 2 40mm fans hovering over my Northbridge...

IMG_0409.jpg


...overkill maybe, but meh :)
 
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Should have said, the cpu is watercooled.

I have reduced the voltage to 1.33 and the idle temp is 70°C so hasn't realy made a difference.

I am going to do the bolt mod tomorrow and if it's still getting too hot I'kll stick a fan on it.

Ill post an update tomorrow.
 
Watercooled, so less airflow than an aircooled case. What program are you using to monitor you're PWM temps btw? I'm running a q6600 under water, and I'm tempted to see if my PWM chips are hitting 100+ now...
 
Using Everest, you are probably correct about the lack of airflow.

I'll have a go at sorting it tomorrow, don't really want to stick a fan on it but might have to.
 
a 120mm fan at 500rpm will probably be enough, and should be virtually inaudible too.

I'lll give everest a whirl, along with IBT, see how toasty things get....
 
MikeHunt79 said:
Watercooled, so less airflow than an aircooled case.
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that's your problem (or at least a big chunk of it) - no airflow over the heatsink.

I would very much doubt that abit would let you RMA under the conditions that you outline as there will be nothing wrong with the mobo under normal conditions.
 
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