Question After changing thermal pads and cleaning, GPU has unstable clock, power is low, and monitor turns off ?

[markotomic03]

Graphics card: Sapphire Nitro+ RX 580 8GB 1411Mhz

I had a temperature over 75, I don't like it to go over 70.
I bought a graphics card, and it couldn't support dual monitors, I thought it was the adapter, so I ignored it.
The monitors turned off as soon as I connected the second one, the fan was at full speed, and the driver was false.

So I decided to clean it. It wasn't very dirty but the pads were in very bad shape and I replaced them with 1mm pads and now I have a problem.

Now, when the graphics are loaded, the clock goes down to 1000 on the test, but it never reaches the maximum.

And after ten seconds of load, the monitor turns off and fan turn off at full speed. Turn off moniotors can fix with underclock 5 to 10 percents.

But the clock is not stable, it varies between 900 and 1100 on test, in the game 1100 MHz to 1200 MHz. The 6pin connector does not react at all, it can be done without it, it draws up to 120, 130 watts. It used to draw up to 180 watts. Gpu temps now is max 69!!!

 

[Imperat0r]

Hello.
Based on the description you provided, i can come to the conclusion that the GPU itself does not have full contact with the cooler.
Since the pads are arround 0,7, and you used 1mm ones, then you will have a gap between GPU die and the cooler.
At least this was in my case when i changed pads and paste.
So because of this gap the GPU overheats and enters in throttle mode.

 

[markotomic03]

Hello.
Based on the description you provided, i can come to the conclusion that the GPU itself does not have full contact with the cooler.
Since the pads are arround 0,7, and you used 1mm ones, then you will have a gap between GPU die and the cooler.
At least this was in my case when i changed pads and paste.
So because of this gap the GPU overheats and enters in throttle mode.

Therefore, it does not matter that he shows that it is 69 degrees. Does the chip have more and doesn't show it??? Which one do you recommend to use 0.5mm or 0.75mm. What are the factories used by sapphire??

 

[Imperat0r]

However due to the fact that you probably used thermal paste, that lowered the temp.
But, in my case on my Sapphire cards (i own RX 470, 480, 570, 580 and 590), i used 0,7 mm thermal pads.
That was the closest match i could find to the original ones.
I bet that after you change again the pads, you will have a fully functional card as the guy in the video.
Keep me posted after you test the card.

Please review the following video:

View: https://www.youtube.com/watch?v=R5Upniyhc3g

 

[markotomic03]

I will replace them, I will let you know what I did. it won't be fast, maybe a few days or maybe even two weeks. Thanks for help.

 

[Imperat0r]

Take your time.
The fact is : If your pads are higher then they are supposed to be, that will create a gap between GPU die and cooler and that will lead to thermal throttle.
Simple.

 

[markotomic03]

My friend and i think the chip is dying, due to mining.

 

[Imperat0r]

Well, we will talk about that after you change the pads
You will be surprised about Sapphire cards.

 

[markotomic03]

Thank you brother. This is a problem, on my gpu. I will be send you a photo of my test.

Edit
I hope this cleanup will solve my previous problem, with using multiple monitors.

 

[Imperat0r]

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[markotomic03]

hello

Well, we will talk about that after you change the pads
You will be surprised about Sapphire cards.

hello again me. I have a problem. My average gpu in gaming with opened case is average 76 celsius and closed 83. This is very bad, after 80 start throtling small. What heppened if voltage section have thin pads. Maybe this a problem.

 

[Imperat0r]

Hello.
it is possible that you used a thicker pads then recommended.
In this case the GPU will have a small gap between the die and the cooler.
Even that you used a good thermal paste, that still don't transfer enough heat to the cooler, resulting in higher temps or even throttle.
In this case you either buy another set of thermal pads but this time thinner, or if you prefer buy KryoSheet, which are made from graphene.
The thickness of those sheets are 0,2mm, that makes them a perfect addition to that gap between the GPU die and cooler.

https://www.thermal-grizzly.com/en/kryosheet/s-tg-ks-24-12

 

[markotomic03]

mz pads is 0.5 mm

 

[Imperat0r]

Ok, let's focus on the cooler system you have.
Your card have those fans.
In order to minimize the temp you must enter in the fan section of the software settings and set them to work at 100%.
After that redo the test.
I recommend to use extra fan for the case in order to assure an optimal air flow.
My computer case have 6 fans 120mm.
2 in front suck air from room, 3 on top and 1 on rear blow the air from the case.
What is your case setup ?