Adding cards but losing stability frequent issue?

[fc48]

Hello,

I was on easy mining few months ago but it could not handle 4x RTX3090.
I moved to HiveOS and was fine. crashes once a week.
I received my 5th RTX 3090 a couple of days ago and as I expected it’s not stable at all anymore.
If I can get the 5 cards to work it’s only stable for 24h maximum.
But more often only 4 cards come up.
And the card that doesn’t come up is not the new one.

I really don’t think it’s an hardware issue (I already changed risers)
I think when you have more than x big cards you loose in stability.

Do you guys have an idea to solve this ?

Thanks for your help.

[keaton_hiveon]

Unstable rigs are usually due to poor OCs. What are you running?

[fc48]

core -310
mem 2200
power limit 320w

[keaton_hiveon]

Use locked core clocks instead. Core offsets just waste power.

[fc48]

to do so i have to enter +500 right ?

[keaton_hiveon]

No, you have to find the lowest value above 500 that gives full hashrate, as values below 500 are treated as core offsets instead of locked core clocks.

[fc48]

Thanks for this, it does lower watts and a bit more hashrate.

I found the issue about my card, finally it was hardware… I have a burn pcie 8pins.
I don’t understand because I stay under 288watts for 1x8pins at the psu (recent and HQ brand : Asus ROG).

I ordered another psu and will go even lower than my previous watts on 1x8pins