Unstable memory controller on one card

[dragonmike]

Fellas

Been mining for quite a while with a bunch of RX 570's, but I seem to have some issues with one card. Upon closer inspection, I saw the load of the memory controller on said card is going up and down all the time, negatively impacting hashrate.

Any idea why that is? There are no memory errors, neither core nor mem are throttling, temp is fine. I'm using Claymore miner (ETH+SIA @ -dcri 16).

[Mattthev]

Fellas

Been mining for quite a while with a bunch of RX 570's, but I seem to have some issues with one card. Upon closer inspection, I saw the load of the memory controller on said card is going up and down all the time, negatively impacting hashrate.

Any idea why that is? There are no memory errors, neither core nor mem are throttling, temp is fine. I'm using Claymore miner (ETH+SIA @ -dcri 16).

Stock VRM voltages? Set lower or higher and test. You can use WattTool.

[dragonmike]

I'm using Wattman to tweak. Strangely enough this happens on my GPU with highest ASIC quality (90.5).
If I increase mem voltage from 900 to 1000 (or even auto), VDDC goes up by approx 100 mV too and then everything's throttling.
I've tried increasing power limit by 10%, no change.

[Mattthev]

I'm using Wattman to tweak. Strangely enough this happens on my GPU with highest ASIC quality (90.5).
If I increase mem voltage from 900 to 1000 (or even auto), VDDC goes up by approx 100 mV too and then everything's throttling.
I've tried increasing power limit by 10%, no change.

Is it happening also with stock bios?

[dragonmike]

I'm using Wattman to tweak. Strangely enough this happens on my GPU with highest ASIC quality (90.5).
If I increase mem voltage from 900 to 1000 (or even auto), VDDC goes up by approx 100 mV too and then everything's throttling.
I've tried increasing power limit by 10%, no change.

Is it happening also with stock bios?

Can't say... I dread having to flash again using Teamviewer...