OCing a 6870

[dark2099]

So I feel all noobish, and after always using the auto tune feature in CCC with my older ATI/AMD cards, and my new 6870 not having that feature, I'm stuck on how exactly I should go about OCing this card. I have MSI Afterburner and Sapphire Trixx installed, so can use either, but would prefer to use Trixx since it allows for clocks over the CCC/BIOS limits. Thanks guys.

 

[damric]

Afterburner will also allow clocks outside CCC limits when you edit the config file. Trixx is nice though, especially with the windows widgit. Just raise clocks up until you get driver crash or artifacts. If you want to go higher, give it a voltage bump until it no longer crashes or artifacts.

 

[Kursah]

Afterburner does as well, all you gotta do is go into the Afterburner install DIR and edit the afterburner.cfg file at line "EnableUnofficialOverclocking = 0", change to 1. That'll remove the limitations set at default. I have yet to try Trixx because Afterburner works so damn well for me...though I've yet to OC my HD5870.

A quick search reveals that with voltage increase you should be able to hit the 1GHz mark on the GPU and around 1150 on the memory. That's just off a quick search. I prefer to use OCCT's GPU Stress test anymore. I'll do a pass of regular and a final pass for error checking on final clocks.

I'm sure some TPU'ers with these cards can direct you better, but this is what I came up with...and I felt like I should share how to make MSI Afterburner work for ya in that respect. Then you could also use the MSI Kombustor stress test to verify the clocks are stable for an all-in-one solution for your GPU.

 

[dark2099]

Afterburner does as well, all you gotta do is go into the Afterburner install DIR and edit the afterburner.cfg file at line "EnableUnofficialOverclocking = 0", change to 1. That'll remove the limitations set at default. I have yet to try Trixx because Afterburner works so damn well for me...though I've yet to OC my HD5870.

A quick search reveals that with voltage increase you should be able to hit the 1GHz mark on the GPU and around 1150 on the memory. That's just off a quick search. I prefer to use OCCT's GPU Stress test anymore. I'll do a pass of regular and a final pass for error checking on final clocks.

I'm sure some TPU'ers with these cards can direct you better, but this is what I came up with...and I felt like I should share how to make MSI Afterburner work for ya in that respect. Then you could also use the MSI Kombustor stress test to verify the clocks are stable for an all-in-one solution for your GPU.

Oddly enough, that tweak in MSI is enabled, think I did it a while ago, but still only can clock the same as CCC, not sure why.

 

[crazyeyesreaper]

most likely its ULPS or ultra low power states it sometimes causes problems for me it caused hardlocks back with my 5850s you have to disable it via the registry.

 

[damric]

Be sure to download the newest Afterburner because the old one doesn't work right with the new voltage regulators. The unlocking process has also changed slightly, as you need to cut and paste this EULA (quote from guru3d):

You need to alter the following:
Seek UnofficialOverclockingEULA field and add following text:
I confirm that I am aware of unofficial overclocking limitations and fully understand that MSI will not provide me any support on it
Set UnofficialOverclockingMode to 1 to keep PowerPlay active (may not work on old ASICs), 2 to traditionally disable PowerPlay or to 0 to temporary disable unofficial overclocking path