Does anybody have issues maintaining hashrates on Ethereum?
I just got a new MSI Radeon VII (Samsung memory) and it's unable to hold hashrates, even at stock, no matter what driver or miner I use. This contrasts greatly with my Sapphire card (Hynix memory), which is going at 93MH/s VERY stably. On both cards, I've swapped the cooler for AIO watercooling blocks, which has kept junction temps around 60 degrees C.
On the MSI, I've got the following settings: 1750MHz core, 962mV; memory at 1050Mhz.
It runs at ~90MHs for about 5-10 minutes, before violently dropping down to 47MHs.
I've noticed that when it drops down to 47MHs and I close Claymore, the core clock is stuck at 1750MHz, even though nothing graphically intensive is running.
I've tried cleaning and reinstalling drivers and swapping between PCI-E slots, and the damn MSI just keeps dropping.
Has anybody experienced this, and does this sound like a dud card?
Something similar happens with my card (AMD/ATI with Hynix) but only when the voltage is too low (e.g. at 950mv with around 1780 core clock) and the hashrate actually drops all the way to zero (while the card seems to still be under full load). Lowering core clock or increasing voltage solves it for me. Another thing to try is Phoenix Miner.
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