Voltage locked: GV-R787OC-2GD

[Soulkeeper]

I can't lower or raise the upper perfstate voltage, Bummer

They set a high 1.22v and I was hoping to dial in something a little more reasonable during summertime(and also for bitcoin temps/watts). It won't let me lower the voltage unless I clock the gpu at 501MHz or lower. The bios is at fault here

Anyone seen modified bios or soldering magic done to unlock the voltage on these ?

 

[Kenmitch]

This is the card you got? http://www.hardocp.com/article/2012/06/19/gigabyte_radeon_hd_7870_oc_video_card_review/3

Looks like it works with Afterburner. Just tested my HIS 7870 and Afterburner drops my voltage to what I selected. You did enable unlock voltage control and monitoring in settings?

 

[Soulkeeper]

This is the card you got? http://www.hardocp.com/article/2012/06/19/gigabyte_radeon_hd_7870_oc_video_card_review/3

Looks like it works with Afterburner. Just tested my HIS 7870 and Afterburner drops my voltage to what I selected. You did enable unlock voltage control and monitoring in settings?

Yes, it looks like they've started locking them now
My bios version is newer than that review sample.
Now after purchasing it i'm seeing others on google searchs with the same issue.

 

[Soulkeeper]

Bios:
PartNumber xxx-xxx-xxx
Version 015.021.000.008.000000
Date 11/14/12 05:26

Version 015.015 is apparently the one that allows changing the voltage.

 

[Rvenger]

Try flashing to previous bios?

 

[Kenmitch]

That sucks!

You mean this one? http://www.techpowerup.com/vgabios/118217/Gigabyte.HD7870.2048.120301.html

I'm not sure if it would be safe to flash it tho.

 

[Rvenger]

He would have to make sure they are the same exact PCB.

 

[Soulkeeper]

Plus I don't own windows, so I can't use their flashing utility

edit: some people are claiming to have created bootable dos thumb drives with atiflash ... Still the risk seems too high