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Increase voltage limits in MSI afterburner/trixx

post #1 of 11
Thread Starter 
Hi guys,

The max voltage I can set in trixx/MSI afterburner is only 1.3v on a HD 6870.

With my Gelid Icy vision cooler my load temps are only 55c at 1030/1200/1.3v.

How can I increase the voltage above 1.3v and can I just carry on increasing it until I reach high temps/instability or is there a max voltage you should run through these chips?

Many thanks,

Stephen
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post #2 of 11
You will likely need to do a mod for voltage.. using soldering iron and VR. You can scale voltage as long as your GPU can handle it..really. I would say you are approaching the "safe" limit for daily use though.

*I run sig'd clocks/volts for daily use on my 6950.. you should be able to push near/around the same level or more with a volt mod, to offset what your applying in AB.
post #3 of 11
Thread Starter 
Quote:
Originally Posted by CL3P20;14319332 
You will likely need to do a mod for voltage.. using soldering iron and VR. You can scale voltage as long as your GPU can handle it..really. I would say you are approaching the "safe" limit for daily use though.

*I run sig'd clocks/volts for daily use on my 6950.. you should be able to push near/around the same level or more with a volt mod, to offset what your applying in AB.

Ok thank you! I was hoping for a software solution, I will probably leave it otherwise.

I did see an old post on here when searching that had a MSI afterburner hack in to change these limits to 1.4v, however it linked to a forum where I could not find the download.
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post #4 of 11
the 2.2beta ver3 of AB allows up to 1.35v software..which is more like 1.38-1.41v real under load wink.gif
post #5 of 11
Quote:
Originally Posted by CL3P20;14321331 
the 2.2beta ver3 of AB allows up to 1.35v software..which is more like 1.38-1.41v real under load wink.gif

Couldnt he just mod the bios? That what I did with my cards to get more voltage in afterburner. I havent messed with ATI bios in a bit so I cant remember the voltage caps they allow.
 
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post #6 of 11
Some ATI cards are great with flashing.. others are very picky though, even with flashing a edited version of the stock BIOS [like my TFIII6950 for example redface.gif].

*More than 1.4v is a LOT on air for these tiny cores..not really something I would be ok with for daily use. On water.. you have much more headroom with temps, and as long as the core speed keeps scaling with additional voltage..and your temps are still in line.. you can push farther. Eventually you may run into OCP related issues under load from running such high GPUv though.. that requires additional mods to disable.
post #7 of 11
Quote:
Originally Posted by CL3P20;14321422 
Some ATI cards are great with flashing.. others are very picky though, even with flashing a edited version of the stock BIOS [like my TFIII6950 for example redface.gif].

*More than 1.4v is a LOT on air for these tiny cores..not really something I would be ok with for daily use. On water.. you have much more headroom with temps, and as long as the core speed keeps scaling with additional voltage..and your temps are still in line.. you can push farther. Eventually you may run into OCP related issues under load from running such high GPUv though.. that requires additional mods to disable.

Got it, I havnt flashed any ati cards since my 5850s they did pretty well. I did have 2 reference 6870s but they didnt like to oc well at all so I never bothered with them.
 
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post #8 of 11
I just got the afterburner files to make the max voltage 1.4 today. I want to have a 1000 core clock biggrin.gif.

Here you go

Is 1.4 safe for a 24/7 overclock underwater?
post #9 of 11
yes.. but your inductors and mosfets will get VERY HOT ! You must have active cooling on them [ie- sinks and fan]
post #10 of 11
Thread Starter 
Quote:
Originally Posted by mam72;14321568 
I just got the afterburner files to make the max voltage 1.4 today. I want to have a 1000 core clock biggrin.gif.

Here you go

Is 1.4 safe for a 24/7 overclock underwater?

Wow thanks.. will check it out now.
Quote:
Originally Posted by CL3P20;14321650 
yes.. but your inductors and mosfets will get VERY HOT ! You must have active cooling on them [ie- sinks and fan]

I have sinks on my VRM/RAM and they are about 15c cooler than with stock cooling. Luckily the HD 6870 is really energy efficient and has good VRMs. I will be careful then pushing it but think there is still some OC headroom left.

@nagle3092 The HD 6000 series has some extra BIOS protection, I normally always flash my OC clocks to the BIOS but doing this on the HD 6870 resulted in a BSOD on startup (even just +1mhz from stock). Not sure if it allows voltage mods however but it's unlikely.

EDIT: Latest MSI afterburner beta (5) still only has 1.3v max for me. Also the patch does not work giving me an error of unable to find patching location (more than likely because it's for an old build). Any more ideas? I might see if RBE allows me to do it. IIRC it may just be changing clocks that causes it to BSOD.
Edited by superste2201 - 7/24/11 at 4:23am
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