Asus 280x DC2T and 7970 DC2T undervolting lock

[Analyst2016]

Hello,

I have been trying to undervolt my 3x Asus R9 7970 DC2Tops and 2x R9 280x DC2Tops for a while now but have not found a solution.

1. I Have flashed the above to 1050v, 1075v, 1100v, 1043v, 1056v, 1100v, and 1143v.
2. For all the above voltage variations, when I start mining, I get get 2MH.
3. I flash it back to stock bios and the card gets back to mining 21MH / works like new again.
4. After flashing with different voltages, kill-a-watt / GPUZ still show 1.2v or same wattage as before.

These cards seem to be locked as voltages don't change after flashing with ATIFlash outside Windows.
Any .rom file changes what so ever seem to dramatically reduces my hashrates as noted above.
I would gladly accept someone else's undervolted ROM file for these cards as I have run out of ideas.
I am very stuck. I would appreciate any ideas / input about what is happening with my cards


Many thanks

[chup]

Hello,

I have been trying to undervolt my 3x Asus R9 7970 DC2Tops and 2x R9 280x DC2Tops for a while now but have not found a solution.

OS, driver version?

[Analyst2016]

Catalyst 5.12/5.7.1
Windows 7/8/8.1/10

All of the above give 2MH until it's flashed back to the stock bios.

[Analyst2016]

Bump*

[curt162]

I registered to say that I am having the same problem; I've been struggling with it for days. Flashing anything with modified voltages locks the card to 500mhz core and 150mhz on the memory, never goes higher or lower. The card I am working with is a powercolor 280x on windows 7. I have successfully flashed a 370, 380, and 7950, so I don't think I'm doing anything wrong. Appreciate the help if anyone know whats going on.

[SkY912]

I registered to say that I am having the same problem; I've been struggling with it for days. Flashing anything with modified voltages locks the card to 500mhz core and 150mhz on the memory, never goes higher or lower. The card I am working with is a powercolor 280x on windows 7. I have successfully flashed a 370, 380, and 7950, so I don't think I'm doing anything wrong. Appreciate the help if anyone know whats going on.

after undervoltage
uninstall the drivers in safe mode DDU v16.1.0.1
and reinstall
helped me