Volt-Offset

hi all

got something all working nicely today and thought I would share with you.

As you may have already seen a rather handy tool has been created called watttool:

overclock.net/t/1609782/watttool-a-simple-tool-that-combines-wattman-with-vrm-monitoring-tweaking-for-rx-400-series

I noticed the other day you can set a card volt-offset from a command line using:

voltage offset from -300 mV to +300 mV, can also be set from command line with
WattTool-0.x.exe voffset(adapter)=offset
where adapter is the number from the drop down list

so this means you can run a bat file on start up or booting or just before your miner starts or just after and set the volt-offset on each card individually.

I had to add in a delay between each one starting else they clash on each other and doesn't work correctly but this is what I'm using


cd\
cd watttool

start WattTool-0.7.exe voffset(0)=-16
ping 8.8.8.8
start WattTool-0.7.exe voffset(6)=-16
ping 8.8.8.8
start WattTool-0.7.exe voffset(12)=-16
ping 8.8.8.8
start WattTool-0.7.exe voffset(18)=-16
ping 8.8.8.8
start WattTool-0.7.exe voffset(24)=-16
ping 8.8.8.8
start WattTool-0.7.exe voffset(30)=-16
pause

this applies a -100mv volt offset to each card

I apply this through a schedule task 1 min after login, this allows for the miner to kick off with full power (create dag) and then apply less power setting.

this works really nicely

It means you can leave cards on auto every power and just lower the power of mem and core relative to the power need by each card, as some are different to each other and require different amt of power to be stable.

this has taken my 470 rig I'm working on with auto power from 1150w to 950w and nice and stable.

enjoy.

Boysie