[Official] NVIDIA GTX 780 Ti Owner's Club - Page 1657 - Overclock.net - An Overclocking Community

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post #16561 of 16563 (permalink) Old 11-19-2018, 08:35 AM
Mr.4way SLI
 
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I had this problem on one of my ref cards. reflowing the Mem ic's with a hot air station and it fixed my card. I guess it had a bad solder joint on one of the chips.
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post #16562 of 16563 (permalink) Old 11-19-2018, 12:22 PM
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Quote: Originally Posted by Ulixm View Post
Hi guys, my card is showing some artifacts in games, that look like spikes that seem to appear at random locations and shapes in the map (screenshot below). I believe the problem lies somewhere in the last 500mb of the card memory based on the results I got after running a few tests with the memtestG80 tool. Details: Running the command "memtestG80 2400 1" gives me no errors but when I run "memtestG80 2500 1" about 43000 errors are detected by the tool... (screenshots below)
Here is what I already tried, but to no avail:

1. "Underclocked" both GPU and memory as much as possible, using MSI Afterburner tool;
2. Baked the card in the oven 3 times already..
That is clearly GPU Artifacts. I would say that card's toast and there's no saving it at this point. I'd just toss it in the bin and get another used one if it was me.
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post #16563 of 16563 (permalink) Old 11-19-2018, 08:38 PM
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Hey guys, here is the conclusion:
Based on Moparman's suggestion, I've decided to try baking my card again under a higher temperature.
The capacitors have then swelled a little bit, making it a little harder to put it back together with the heat spreader but I was happy to verify that the number of errors detected by memtestG80 have since reduced.
So I've decided to try again!
Unfortunately, the results were not so great this time. The capacitors swelled even more and although I was still able to boot with the card, a whole lot of new artifacts appeared. That's as far as I am willing to go.
I think I might have had better results with a heat gun, as suggested by Moparman, because that would've spared other card components from the unnecessary heating but I don't have one at my disposal.
But that's fine. I knew the chances were pretty low anyway.
Thank you guys for your time!
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