Hello all,
I have 2 rigs, both ran stable with 3 sapphire 7950s at 1.25v ~635khs scrypt mining untill ~2 days ago. I got a complaint from a significant other about the 'intense heat' blah blah; I retorted that my cards were only at 65C and not to worry. That only made the situation worse, go figure. So in an attempt to appease I decided to try to undervolt my cards to increase their thermal efficiency. I got tested out one card and got it to hash stable at 1.09v with minor khs loss (final ~620khs). So having to go to work I undervolted the rest of my cards with Trixx and waited for 30 min. All seemed good so I left; while at work both systems crashed within a few hours of ea/ other.
On sys one (my MSI mobo system), I ran some tests: reinstalled drivers, clean OS wipe -> neither fixed it.
Reinstalled drivers again, and tested slots individually with one tested working GPU. 3/7 slots wont let me boot using GPU as video source.
Well at least I have 3+ pcie slots on my machine with 3 GPUs... WRONG. It turns out 2 cards will hash at stock settings, but a third (even at stock settings) causes my driver to crash, regardless of the slot combo.
It looks like its the mobo?
How can undervolting damage a mobo?
I never had any temp problems (always around 65C) or stability issues before this epic crash. I haven't even had time to check out the other comp except I know it wont run it's three cards after a driver reinstall either - haven't played with slots.
ANY other ideas I can try? Super bummed I might have killed a mobo by undervolting (I know there is risk, but I believed undervolting couldnt do that)!
Much thanks in advance. Even drunken ramblings (roughly on topic) are appreciated!
I have 2 rigs, both ran stable with 3 sapphire 7950s at 1.25v ~635khs scrypt mining untill ~2 days ago. I got a complaint from a significant other about the 'intense heat' blah blah; I retorted that my cards were only at 65C and not to worry. That only made the situation worse, go figure. So in an attempt to appease I decided to try to undervolt my cards to increase their thermal efficiency. I got tested out one card and got it to hash stable at 1.09v with minor khs loss (final ~620khs). So having to go to work I undervolted the rest of my cards with Trixx and waited for 30 min. All seemed good so I left; while at work both systems crashed within a few hours of ea/ other.
On sys one (my MSI mobo system), I ran some tests: reinstalled drivers, clean OS wipe -> neither fixed it.
Reinstalled drivers again, and tested slots individually with one tested working GPU. 3/7 slots wont let me boot using GPU as video source.
Well at least I have 3+ pcie slots on my machine with 3 GPUs... WRONG. It turns out 2 cards will hash at stock settings, but a third (even at stock settings) causes my driver to crash, regardless of the slot combo.
It looks like its the mobo?
How can undervolting damage a mobo?
I never had any temp problems (always around 65C) or stability issues before this epic crash. I haven't even had time to check out the other comp except I know it wont run it's three cards after a driver reinstall either - haven't played with slots.
ANY other ideas I can try? Super bummed I might have killed a mobo by undervolting (I know there is risk, but I believed undervolting couldnt do that)!
Much thanks in advance. Even drunken ramblings (roughly on topic) are appreciated!