Question Why has my gpu started running hot again after repaste ?

[Aarchiee]

A couple of weeks ago I decided to repaste and repad my Msi RX5700XT. I'd never torn down a gpu before although i always build my PCs. Its always been sitting at around 85deg overall but at the hotspot always up at about 110-111 degrees when under load, playing GTA or Forza Horizon. So i thought i would give it a go, if it works then great if not, then a new gpu. I did the work and what a difference!! Overall temps were sat around 60 and hotspot dropped top 70 under load a drop of 40 degrees! .
A few weeks later, its now gone back to what it was previously! Why is that ? What has gone wrong and is it worth doing again or am i just wasting my time ?

 

[JeffreyP55]

A couple of weeks ago I decided to repaste and repad my Msi RX5700XT. I'd never torn down a gpu before although i always build my PCs. Its always been sitting at around 85deg overall but at the hotspot always up at about 110-111 degrees when under load, playing GTA or Forza Horizon. So i thought i would give it a go, if it works then great if not, then a new gpu. I did the work and what a difference!! Overall temps were sat around 60 and hotspot dropped top 70 under load a drop of 40 degrees! .
A few weeks later, its now gone back to what it was previously! Why is that ? What has gone wrong and is it worth doing again or am i just wasting my time ?

Why you did a thermal paste replacement is a mystery to me. Better start over. You may find the problem.

 

[Aarchiee]

Why you did a thermal paste replacement is a mystery to me. Better start over. You may find the problem.

It said in the post why, It was running at 110-111 degrees C. That's not right by any standards and considering the temps dropped like a stone after repasting, there obviously was an issue with heat dispersal.

 

[COLGeek]

What TIM/pad materials did you use? Links if you have them.

 

[JeffreyP55]

It said in the post why, It was running at 110-111 degrees C. That's not right by any standards and considering the temps dropped like a stone after repasting, there obviously was an issue with heat dispersal.

Yes, logic tells me you might of done something wrong that didn't show up right away.
Just a suggestion.

 

[stonecarver]

I did the work and what a difference!! Overall temps were sat around 60 and hotspot dropped top 70 under load a drop of 40 degrees! .
A few weeks later, its now gone back to what it was previously!

Just wondering did you do a driver update than the temps went up.

Can you or are you using MSI Afterburner to set fan yourself.

If you need to redo card ? Just trying to see if we can save you that step or conclude to say
re-paste .

 

[Aarchiee]

What TIM/pad materials did you use? Links if you have them.

Sure. I used ARCTIC MX-6 (4 g, incl. 6 MX Cleaner) paste https://amzn.eu/d/7cs2Qh0 for the GPU

And Aairhut 4 Pack 13W/m.K Thermal Pads, 100 x 100mm 0.5mm+1mm+1.5mm+2mm Silicone Cooling Pad for the memory chips, . https://amzn.eu/d/2CJ9hsk

I have heard of something called "pump out" where the expansion and contraction with heating and cooling can cause the paste to pump out between cpu and the heatsink. Could this be the cause ? and how do i stop it ?

 

[Aarchiee]

Just wondering did you do a driver update than the temps went up.

Can you or are you using MSI Afterburner to set fan yourself.

If you need to redo card ? Just trying to see if we can save you that step or conclude to say
re-paste .

Using afterburner, fans are on auto with it and once i start playing the temp rises and the fans sit at abbot 85-90%
It was ok after driver update then over time the temp gradually increased until its now where it was originally.
I have heard of something called "pump out" where the expansion and contraction with heating and cooling can cause the paste to pump out between cpu and the heatsink. Could this be the cause ? and how do i stop it ?

 

[JeffreyP55]

Using afterburner, fans are on auto with it and once i start playing the temp rises and the fans sit at abbot 85-90%
It was ok after driver update then over time the temp gradually increased until its now where it was originally.
I have heard of something called "pump out" where the expansion and contraction with heating and cooling can cause the paste to pump out between cpu and the heatsink. Could this be the cause ? and how do i stop it ?

MSI afterburner is not highly regarded. The reviews aren't very good. You have other options. Do a little research.

 

[COLGeek]

Using afterburner, fans are on auto with it and once i start playing the temp rises and the fans sit at abbot 85-90%
It was ok after driver update then over time the temp gradually increased until its now where it was originally.
I have heard of something called "pump out" where the expansion and contraction with heating and cooling can cause the paste to pump out between cpu and the heatsink. Could this be the cause ? and how do i stop it ?

Pump out can be an issue, especially if you put too much TIM on. Less is generally "more". Only a very thin film is needed. The pump out is often excess and doesn't cause any real harm.

I would uninstall Afterburner. Remove all OCs. Need to see where your system is at full stock speeds to get a proper assessment.

 

[stonecarver]

I have heard of something called "pump out" where the expansion and contraction with heating and cooling can cause the paste to pump out between cpu and the heatsink. Could this be the cause ? and how do i stop it ?

It's weird you can re-due 10 GPU's paste and that 11th one you did just like all the rest will make you pull apart again and re examine . You start over re-paste, put it all back together and your good to go. Not saying every card is savable just my own experience.

 

[Aarchiee]

Pump out can be an issue, especially if you put too much TIM on. Less is generally "more". Only a very thin film is needed. The pump out is often excess and doesn't cause any real harm.

I would uninstall Afterburner. Remove all OCs. Need to see where your system is at full stock speeds to get a proper assessment.

Is is feasible to use thermal pads on a gpu instead of paste to prevent "pump out" ?

 

[thestryker]

It's possible you used pads that were too thick and that can cause these types of issues. GPU heatsinks don't have the tension CPU ones do so you really have to get them as close to stock as possible or else you might run into problems.

Do not use thermal pads on anything other than memory chips/power regulation they're way too thick and wouldn't transfer heat well enough even if they weren't. The closest thing to a pad you could potentially use is PTM-7950, but what you've got is plenty good enough and is rated for long life (personally used MX5 on my 3080 and 1660 Ti).