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Phoenixminer,
My rig config: win 10 pro, 6 x msi 570 gaming x 4G, mining at Nanopool, mclock 2030, vcddc 870, cclock 1100, vcore 950, fan 80%.

Miners 2.6 and 2.7a both crash win, BSOD. Claymore doesnt, but it resets the voltages and clocks after sometime after the decree sessions I guess. Now Im running 2.7a with -mi 8. This reduces the local hashrate to around 173 from 175 of claymore.

Please look into this issue.

Thank you.

Try give them more voltage and test the miner first. If you can run for 24hrs stable, try decrease the voltage. For my experience, the claymore hardware control is not so stable. I am now using overdrivetools to control. It 's easy to use.

Then Phoenix draws more power than claymore with reduced hashrate. Ill wait. Thanks for the tip.

What you are seeing is that your clocks are not stable, software access the systems in different ways which can make it behave differently.

2030 is per my experience quite high for a 570, I have only a single card (570) which are stable at 2030+ - The median is 2000 on memory for my 120 rx570's

Thanks a lot for the info on mem clocks. And as youre running lots of rx 570, could you help me solve this problem with one of my cards: I set fan speed to 100% in afterburner 4.4.2 but claymore reports 90% and this number never goes higher, so the GPU hits 57C. Im asking because the other 5 report higher 95-96% fan speed and are running cool at 50C.
Is this a hardware issue? I have reinstalled windows but the problem persists.

Thank you.

I cannot stress this enough - Do not use any other software for controlling your GPUs than OverDriveNtool - It is the ONLY stable software for controlling it.

But in either case, 57C is in nowhere near a problem, I run mine at 65-70C, you need to remember that a GPU is built for temperatures in the area of 90-100C.

Anything below 80 is perfectly safe imo.

Thank you for the info. But we are stressing them 24/7 so Im rather worried.

As for overdrive tool, do you know how to control the fan speed? How many rpms in overdriventool translate to 1% in afterburner?