Strange simpleminer behavior with rx 580 XFX.

[AnusXpander]

Hi there.

I have rig with 6 XFX 580 8GB on samsung memory, im using simpleminer and I can't change "Core MHz" If I put there for ex. 1150 or 1200 on dashboard I see 1201. What can be possibly wrong? Now I've set up:

https://i.snag.gy/nkRUQ6.jpg
https://i.snag.gy/9UMlvi.jpg

[Xazax310]

Did you BIOs mod these yourself or use the dual bios switch that XFX has? It looks like that is the core set via BIOS. My XFX 580's I just bought recently have Micron memory and using the BIOs switch the core is set to 1150mhz.

[AnusXpander]

I have modified my bios, I can change it again with this one (petarSRB):
https://anorak.tech/t/xfx-rx-580-gts-xxx-edition-8gb-samsung-memory/30092/24

[AnusXpander]

Ok I'll post my solution maybe it will help to someone in the future, I've flashed again my bios with rom that i mentioned earlier in this post, now it works fine:
https://i.snag.gy/8ewKxG.jpg
Power usage from wall, lower than 900WATTs.

[huntingthesnark]

Did you BIOs mod these yourself or use the dual bios switch that XFX has? It looks like that is the core set via BIOS. My XFX 580's I just bought recently have Micron memory and using the BIOs switch the core is set to 1150mhz.

I'd noticed this too, but it's not consistent. Sometimes you can reboot and get the OC settings in SMOS, sometimes not.

[farland7]

I have modified my bios, I can change it again with this one (petarSRB):
https://anorak.tech/t/xfx-rx-580-gts-xxx-edition-8gb-samsung-memory/30092/24

Do you have any more links / information on this? I did not have experience for updating bios and would like to know more about this in more detail.