Since V12 it seems to run for 3+ hours and then the computer starts rebooting in 5-15 cycles... and then it ran for 45 minutes and then for over an hour again... weirdness
Further down this road and the "stability" seemed to get worse. However, in the end I can't say that it was mainly attributed to v12+ or something else. I ended up getting several blue screens and then finally doing a reset. I'm back to an apparent "stable" condition but it has only been an hour.
Also... I'm running a 3-year old 850 Watt power supply and measuring up to 815 watts with my kill-a-watt at the wall. That's with 4x 7950's in the rig. I measure around 100 Watts before the miner turns on so I guess that would average around 175 watts per card. This is without any undervolting. I tried undervolting along with this whole stability troubleshooting process and I wasn't successful at all. I may try again since the reset of Windows 10 OS seems to have made things more stable.
So what does the 850 watt power supply mean anyway? Should I be able to pull up to 850 at the wall and be fine? I read elsewhere in this thread (I think) that you could pull upwards of what your power supply is rated for and this gets into the realm of efficiency. Regardless... I'm jonesing for a new PSU so that I'm not so near the apparent threshold.
The PSU rating is for the DC side (inside the system), not the AC side (wall). So, if the PSU is 90% efficient, it should max out at (100/90) * 850 = 944 watts at the wall.
I'm back to the random restarts
I'm kind of thinking it's the power supply but if I still have over 100 watts overhead I'd think it would be okay. But that's still a lot of work on a 3-4 year old power supply.You need to reduce the frequency. The peak power is quite high. There are spikes.
