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ASUS HD6970 overclocking?

post #1 of 28
Thread Starter 
got my 1055t to 3.9Ghz, so i shouldn't be CPU bottlenecked.

updated to all the latest drivers and downloaded the latest 'hotfix'.

i have msi afterburner as well and furmark.

what do i have to do from here? how much performance boost will i get? whats safe voltages, like i wont take my 1055t past 1.5v as that's the max, its at 1.425, so i have some decent headroom, what should i do with my 6970, what voltages are safe etc, what settings do i use on furmark to test stability, or do you use something else to test stability, im sort of worried to use furmark as i have heard of it killing cards.

also, why can't i change my shader clock in afterburner? i can core voltage, core clock, and memory clock, although i have heard memory overclocking is unsafe and has little affect.


thanks in advance, and i do remember to rep, so please help smile.gif
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post #2 of 28
Thread Starter 
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post #3 of 28
Thread Starter 
downloading 'kombustor'
    
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post #4 of 28
You dont independantly adjust the shader clock, the max safe voltages are 1.3 though I dont go above 1.25. Performance increase is kinda touchy, really depends on what application your talking about. And if you do not want to use furmark, you can use folding@home gpu3 client and it will help a good cause while testing out your hardware smile.gif
post #5 of 28
I have a MSI 6970 and just started messing with Afterburner. The shaders are locked in MSI and only avail for Nvidia cards. The rest I have no idea how to do properly. I want to know how to OC these cards with as little risk of damaging it. My 6950 and now 6970 is not really performing as well as I thought it would. Heaven bench was 979 with the 6950 and now 1067 with the 6970. All PC specs in sig.

I think the Afterburner is set to not let you hurt it too bad since you can only go up 950/1450 and I was told that modding the voltage is what can be dangerous.
post #6 of 28
For my 6970s i would increase by 10mhz run furmark for 10min and then if it passed increased another 10mhz, when i hit a wall i would increase the voltage by .005 and test again, kept going back and forth till i hit my max which was 1020mhz at 1.265v.

When i asked what the max safe for a 6970 was the concensus was 1.3v but i hit my max before then even.

once you find what you think is your max go game for a while just to make sure it is indeed stable.
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post #7 of 28
Blindsay's technique is correct. Max I was able to achieve without completely fine tuning was 1000/1500 @ 1.25
post #8 of 28
Thread Starter 
thankyou for all the responses, set up my own custom fan profile, so hopefully wont get too hot, seems to have settled at 60 now, and this is about 30 percent through kombustor, then going to up by 10mhz and try again smile.gif thanks for quick replies, rep to you all
    
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post #9 of 28
The most I've done so far with my ASUS 6970 is 1185 mV, and clocks are at 945 / 1460. I can go higher but temps reach 90C.
     
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post #10 of 28
Thread Starter 
how long do you all run kombustor for? i've got to 10 minutes fine.
    
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