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Overclock 6870 past 1000Mhz....how?

post #1 of 40
Thread Starter 
Got 2 6870's (Gigabyte) in cf and want to push them past the max CCC settings of 1000/1250.

I have MSI AB and every time I set the 'unofficialoverclocking' to '1' in the .cfg file, the whole system freezes.

Tried Trixx and that freezes my system anytime I try and change the stock settings.

Cards will run 1000/1150 on stock volts.

Any other software around that will do the job, or am I up for a bios flash (which I have no desire to do)? smile.gif.
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Obstinate
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post #2 of 40
I experienced the same problem as well with afterburner. never fixed it till I reinstalled windows just a few weeks ago.

depends on the card really. mine can also do 1000/1060 at stock voltage. I don't think 1250 is reachable with the mems but I was able to do 1050/1160(stable)


EDIT:
oops didn't see you have water cooling smile.gif
post #3 of 40
Thread Starter 
This is a new build that wouldn't allow OC's past 1000Mhz from scratch. Only just now seeing if there is a work-around smile.gif.
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Obstinate
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post #4 of 40
maybe one card is holding back the other? try overclocking them separately and see how they overclock. fortunately mine overclocks almost the same when I tried overclocking them separately
Edited by jprovido - 1/29/11 at 12:55am
post #5 of 40
custom bios flash?
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post #6 of 40
Edit: Nevermind, missed a post somehow.
post #7 of 40
Thread Starter 
Quote:
Originally Posted by jprovido;12184490 
maybe one card is holding back the other? try overclocking them separately and see how they overclock. fortunately mine overclocks almost the same when I tried overclocking them separately
It's not that 'cos both go to 1000Mhz piece of cake. The slider only goes to 1000Mhz until (on AB) I edit the config file to allow unofficial overclocking. When I do that, the whole system freezes when I try to OC.
Quote:
Originally Posted by ShortySmalls;12184543 
custom bios flash?
I am very wary of doing that. I would have no idea what to do if it went wrong.
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post #8 of 40
Can anybody offer a resolution please? I'm experiencing the same problem. I have 2 Sapphire 6870s in CF on water, but only can reach 1000Mhz.

Would like to get them to 1100ish, but can't seem to get any of the offered fixes to work(ie:change unofficial overclocking, trying something else besides AB).

Thank you
  
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post #9 of 40
have you tried the sapphire trix software. or have you done all the mods in reg edit and afterburner.
post #10 of 40
Thread Starter 
Which mods?
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Obstinate
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