Ich habe vor kurzem eine gebrauchte XFX RX 580 8 GB GPU gekauft. Sie ist nicht älter als 2 Jahre. Ich bin mir nicht sicher, ob sie für Mining oder Gaming verwendet wurde, aber ich habe sie mit dem Gaming-BIOS bekommen, wofür ich sie verwende.
Als erstes habe ich es also geöffnet, die Reste der alten Wärmeleitpaste entfernt und neue aufgetragen. Ich habe das bei mehreren Karten gemacht (des gleichen Typs und einiger GTX 1060), aber diese hier bereitet mir Kopfschmerzen.
After some time (less than 2–3 weeks), my PC suddenly switched off during gameplay. That happened again soon and I decided to open it up and look for signs. I disassembled the GPU and found out that there was barely any thermal paste left on the chip and the heatsink. I applied the thermal paste again and reassembled everything again and continued using my PC for gaming.
Now the same issue, exactly as the last time, happened again. Again, it was after less than 2–3 weeks. Now I’m worried that my GPU is overheating and melting the paste off quickly. I’m curious what might be causing this.
Could it be a bad thermal paste quality? Is it just something wrong with the GPU hardware/heatsink?
P.S:
All the other parts in the PC are new, bought freshly from the shop, so I wouldn’t expect it has to do with any of them. I have 2 fans on my case, 1 as an intake and 1 as an exhaust. I have few of these setups built and this one particular is the only one giving me troubles.
The thermal paste I used is a low quality one I guess: https://www.amazon.in/HT-GD660-CPU-Thermal-Grease-30g/dp/B01LW8TKX6
Antwort1
Actually, the therml paste only displaces the air in the gaps between the DIE and the Heatsink.
The air would work as insulation.
Following heat transition coefficient for the different materials in W/(m K):
- Air: 0,0262
- Alumnium: 236
- Copper: 401
- Thermal paste: around 5-10
You see the huge difference between air ant thermal paste. But both copper and alumnium are much better.
What I actually want to point out is: The layer should be as thin as possible, the more exact the components are built, the less grease you will have.