Hi HiveOS miners,
I have to add some notes to this thread, since I’m using the undervolting technique recently introduced in HiveOS for more then 3 months, so I have some experience with it (from roughly 10-20 mining rigs).
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first of all - You can’t combine wolf’s ohgodatool with another common technique - VRM voltage offset in VBIOS. actually, you can, but it might cause problems and it does not make sense. So, you have to remove the voltage offset from your VBIOS and reflash your RX card
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fan speed related issues: actually, I never got the idea enforcing the GPU fans to a certain level. If You need to lower the GPU temperature (and the memory modules/mosfets tied to a GPU heatsink), lower the temperature target instead of forcing the fans to certain level of PWM. and most importantly, never-ever set the fans to their max PWM, and then complain about fans lifespan
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applying the settings on-the-fly: I recommend You to stop the miner, run the script, then start the miner again. I’m doing this when switching from one algo to another (for example, from ethash to cryptonight v7/heavy), since some algo performs better with higher core clocks.
Anyway, I’m happy to see the introduction of this technique in HiveOS, this might help other miners to switch their rigs to LinuxOS.