Hey guys! It’s me once again!
I’ve been seeing a weird anomaly on one of my nvidia gtx’s and it consists in a very sudden temperature rise from 34 C° to 70° (when I start the miner) in less than 15 seconds. It eventually leads to a miner failure after reaching 75 C° in a matter of minutes.
I proceeded to detach the heat sink with its coolers from the board in question and also its back plate. I found the original thermal paste a bit dry so I cleaned everything (board and heat sink) with propyl alcohol and reapplied new thermal paste to both the core and the heat sink area where the core makes contact with. I used Artic Silver 5 which proved to me to be one of the best ones around many times .
So I don’t know if it was because I was running out of paste (I may not have applied enough of it) or what but… the issue still persists and now I’m testing the video card running at a power limit of 80%. That prevents it from going beyond 68 and failing…
All of my other video cards are successfully running at 100% power limit with no problems at all and one of them is working on the riser the failing one was so it’s not a riser or psu cable problem ( which I considered at first).
Last but not least, some of the old thermal paste got kind of stuck to the core and propyl won’t get the job done, it’s a very thin layer but can’t get to remove it…still, it’s on a very small area of the core I just can’t believe that’s the reason why the temperature makes such a jump from 34 to beyond its regular working temp in such a short time.
Thanks a lot for any suggestions or ideas you may have guys!!