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Unlocking voltage with TFIII 6950

post #1 of 5
Thread Starter 
Now my rig is settled in, I'm trying to OC my video card. With stock voltage, I'm currently stable at 875/1325 using Afterburner. My question is twofold. First, how do I go about changing voltages (option locked in AB)? Second, how much more of an OC can I achieve?
    
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post #2 of 5
http://www.vortez.net/articles_pages...locking,1.html Here u go brother 1000 core should be easy
OG TRIPPLE OG
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OG TRIPPLE OG
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post #3 of 5
Thread Starter 
Got it to 900/1325 @ 1.2v (Not unlocked). Anything more, it tends to get cranky and crash. Tried lower, but wasn't stable in-game. Max temp of 69c. So how's that for an OC?
    
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post #4 of 5
first get AB 2.2.0 beta 3, change the cfg file like this:
...
[ATIADLHAL]
UnofficialOverclockingEULA = I confirm that I am aware of unofficial overclocking limitations and fully understand that MSI will not provide me any support on it
UnofficialOverclockingMode = 1
AccessibilityCheckingPeriod = 0
...
then remove Overdrive limits (nice little program- does it for you)

sync both Overdrive and AB clocks, keep Power Control @ +20%, fan at the lowest 20% (mine keeps checking itself and messes with AB fan profile), in AB make sure to show Voltage Monitoring @ settings/monitoring (not on by default)
All this because Overdrive and AB don't really work together and every time a change is made in AB, Overdrive starts reseting and flickering.
So mine goes to 950/1400 @ 1.240 game stable (Witcher 2)


forgot something- don't bother unlocking, I tried with success, but got heavy artefacting in exchange
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post #5 of 5
In Afterburner go to settings 'General' tab. Check 'unlock voltage control'.

Go up small increments each time so you know when you reach your limit which varies card to card.

When your card becomes unstable or you see artifacts with clocks, bump the voltage. That should re-stablize it. Then try going up again in clocks. Small increments again until it becomes unstable or artifacts. Then bump voltage again. Repeat and rinse until neither bumping voltage or clocks give you a stable card. Then go back down one increment for saftey and you have the max your particular card can over clock stable.

Check your card over clock by stress test, like 3D Mark 11 benchmark. Then play some gaming. If both work you can go up another notch until one or the other is not capable and you'll know when you hit the wall.

Keep a tab on every clock/voltage setting for your personal records. I like to check GPU-Z validation because it also tells you what percentage your getting from said clocks. I have a couple of profiles I keep. One for 24/7 and the other for heavy gaming, which I wouldn't want to keep on 24/7.

Also read some posts from other users on their suggestion on voltage. Don't want to over volt too high and fry your VRM. Thread carefully and enjoy the pleasures of over clocking. Good luck.
     
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