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Voltage control on GHZ 7970's workaround!!!?

pgi947

pgi947

pgi947

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Hi all, was strolling through some posts about the new Lightning BE and it being based on the GHZ 'XT' chip.

I then found this interesting post from Unwinder (creator of rivatuner/AB/everything):

Unwinder @ guru3d said:
Originally Posted by Unwinder
Just checked the latest changes in hardware database, added from MSI side to 2.3.0 distributive and I'm afraid that I've got bad news for those who own reference design 7970 GHz Edition cards.
The database defines any 7970 GHz Edition card as MSI custom design 7970 Lightning Boost Edition card, which means that Afterburner will search for Lightning specific voltage controller on any reference design 7970 GHz Edition card. As a result, voltage control will be available on true 7970 Lightning Boost Edition cards only.
I'm not sure if it is a typo or not. These changes make sense only if MSI ships 7970 Lightning Boost Edition cards with reference 7970 GHz Edition BIOS, but in this case voltage control for reference 7970 GHz Edition won't work in Afterburner at all.
I'll ask MSI to clarify those changes inside the database.

Small workaround: happily starting from this version the databases for reference design cards and custom desigh cards are stored in different files. So it is enough to delete MSIAfterburner.oem file to get rid of all custom MSI cards support including 7970 Lightning Boost Edition.
Click to expand...


Just thought this might help you guys with the newer 'locked' 7970's, seems a bug defaults GHZ chips to look for the Lightnings VRM's which are different to reference, removing the above file should force it to default back to reference VRM's.

Interested to hear results :)
 
Almost I just have to make sure monitoring starts with windows - it's not ideal but at least it's a solution.

Was using ab for monitoring though now radeon pro when I can, trixx for volts until I decide to try the test oc bios then it's back to AB.
 
Just done that on my other pc which has the sapphire vapor X, you can monitor the voltage but it does nothing when you increase it.

You have to use Trixx to overvolt, the current version only lets you go to 1.3v where as version 4.4.0b lets you go as high as 1.385.
 
Zaim said:
Just done that on my other pc which has the sapphire vapor X, you can monitor the voltage but it does nothing when you increase it.

You have to use Trixx to overvolt, the current version only lets you go to 1.3v where as version 4.4.0b lets you go as high as 1.385.
Click to expand...

Afterburner let's me change the voltage up to 1.3 and HWMonitor confirms the change give or take a few volts. Might try the latest Trixx version and pump some more volts into it as I'm stuck at 1215/1625 at 1.3v :|
 
I've deleted the .oem file but nope it doesnt work with the gigabyte ghz edition. I did have an original one and this is the card I got back through an RMA. Gutted!

I cant even push the clock 25mhz without it going unstable on me so I'm stuck at 1100/1500. Would love to find a workaround as even the none ghz versions are voltage locked apparently!
 
This may not work on all cards, if the card is reference ghz layout it should but I'm sure I read somewhere the windforce ghz uses a different voltage controller, in this case it's down to giga to give support via oc guru or whatever it's called.

Don't forget afterburner is published by msi, if msi don't use the controller it's unlikely unwinder will go out of his way to support it.
 
pgi947 said:
You try the modded version? Gives me 1.38/1.8v on core/memory
Click to expand...

What do you reckon is the max safe voltage for a tahiti chip?

I've been playing with my 7950s, and I'm getting 1300Mhz on each core (with temps topping out at 48c :p) at 1.3v.

I reckon I could hit 1350, 1400Mhz with another voltage bump, I played with 1350 and it seemed like it just needed a bit more voltage to be stable.
 
If you're under water, provided you keep all temps in check (VRM especially) then the sky is the limit really, I wouldn't venture too far north of 1.3v for 24/7 though, benching I'll be pushing the max 1.38v then if I'm not happy I'll try the test oc bios at 1.4v.
 
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