Unfortunately I must write, that nvOS is really unstable with 11 GPUs in my case. I'm sad... :-( In this case, each miner crash a few minutes after mining for
memory segmentation fault, in 70% of startups watchdog kill mining process for maybe 20x times. In general there are many epochs without mining - when nvOS set up GPUs, or restating whole mining process. After GPUs re-allocation there are great improvement in stability. So, someone who has in one rig more that 8 cards and succesfully OCed?
I'm solving miners crashing, OC all day. My conclusion is nvOS v0019 is unstable and I can't trust it - with 11x GPUs.
It's little strange that if rig has only 8 cards, so it's stable. So, I've two rigs now, with 8 gpus, and 3 gpus. Both use nvOS and works :-) I don't understand why both rigs can have different OC settings.
On rig with 8 gpus is this:
On rig with 3 gpus is this:
- power limit: 225W
- core: +120
- mem: +900
- Mobo: ASUS Maximus Ranger IV
- PSU 1700W
- 3x Gigabite AORUS 1080Ti Extreme Water
- i7-4790K
both rigs use CPU mining too
Hash rates are for ZCash:
- with 8 gpus - about 5550 Sol/s
- with 3 gpus - about 2150 Sol/s
or higher depending on how hot your GPUs are tending.
IMO 1080tis should always have active cooling; also they do best when the fans are blowing into the GPUs from the front (they are rear + top ejecting (not front like you would expect))