Memory errors on unmodded GPUs

[jajamelony]

Hey All,

I'm a bit puzzled here. I have a rig with 7 cards on an ASUS PRIME Z270-A. Motherboard is powered by 850W PSU with 2 cards and 5 cards are on an 1300W. All are powered via MOLEX risers from the main PSU.

Recently the last card I added (MSI Gaming X RX-580 8gb) to the system started generating millions of GPU memory errors. Initially I thought it was because of it having modified ROM but I took the card to another rig that only has two cards installed and it performs in there flawlessly, ZERO errors for more than 24 hours.

I then added a brand new Sapphire Nitro RX 580 8gb *unmodified* straight out of the box to the original rig and still got errors, in the millions. I then tried an MSI Armor RX-580 8gb, both modified and unmodified. Same thing, million of errors.

I replaced the riser, cables, swapped the molex power around, re-seated the risers on the motherboard, replaced the motherboard riser. Same result... I then DDU all the drivers, reinstalled brand new ones, still same issue. Millions of errors on every card I add, modified or not.

The remaining 6 cards which all have modded ROMS do not generate any errors (maybe one card does like a 100 errors in 24 hours).

So what could be reason for this?

jaja

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[Vann]

Memory errors are generally from overclocking the memory too much. Try reducing the memory clock by 50 MHz on the card producing errors and see if it helps.

[jajamelony]

That is the thing, I replaced the card with errors with a "STOCK" card, that is not overclocked at all and it still gives millions of errors.

jaja