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I am unable to overclock my 6950's at all

Last response: in Graphics & Displays
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April 19, 2013 7:40:08 PM

So I have multiple Visiontek 6950's in my computer (1gb version) and I can't overclock them at all. When I go into MSI AB, the sliders are already at their maximum which prevents me from sliding them any higher. These values are 800MHz for the core and 1200MHz on the Mem. I can't access the voltages either. I am able to underclock them, but when I do this the clock speeds don't change at all in GPUZ and the screen starts tearing and my computer becomes unusable. Then I tried Sapphire Trixx software, and it appeared as if I could overclock the cards but when I did I had the same results as when I tried to underclock them in AB. I have no idea what is causing this.

I am on Catalyst 13.3, and I have all of the latest drivers. I have uninstalled reinstalled drivers and tried different versions but nothing has worked. Other people with the same model card as me have been able to overclock, so I have no idea what the deal is. Any help would be appreciated.

More about : unable overclock 6950

April 19, 2013 8:34:53 PM

It might be that your name brand card, Vision Tech, doesn't respond well to changing the clock speeds on your card. I have the same problem with my 660Ti, well kind of. If I overclock it at all, my games crash after a while. The games won't crash at all if I don't overclock my card. And most people are able to overclock their 660Ti's at least a little.

As for underclocking your card, I've never had a card respond like that to underclocking it. But like I said, it may be that your name brand doesn't respond well to clock speed differences.

I'd recommend you try MSI Afterburner. It's the overclocking program I use for all of the 4 graphics cards I work with, and it works with all of them. That and EVGA Precision X, but that may only be for EVGA cards, although I think it can work with other cards.
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April 19, 2013 8:54:52 PM

robjon70 said:
It might be that your name brand card, Vision Tech, doesn't respond well to changing the clock speeds on your card. I have the same problem with my 660Ti, well kind of. If I overclock it at all, my games crash after a while. The games won't crash at all if I don't overclock my card. And most people are able to overclock their 660Ti's at least a little.

As for underclocking your card, I've never had a card respond like that to underclocking it. But like I said, it may be that your name brand doesn't respond well to clock speed differences.

I'd recommend you try MSI Afterburner. It's the overclocking program I use for all of the 4 graphics cards I work with, and it works with all of them. That and EVGA Precision X, but that may only be for EVGA cards, although I think it can work with other cards.


Yeah, at first I overlcocked one of the cards and it didn't work but I didn't think much of it because it was a pretty cheap card. When I tried it on my other 2 6950's and it didn't work I thought either something else was wrong with my software or hardware, or none of the cards of this model could overclock. Since now I know other people with the same exact card as me who can overclock theirs, I assume that something is going wrong with my software or hardware configuration that I am unaware of.

I haven't been able to find this issue happening to anyone else online either, which is odd as well.



Don't...

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http://www.tomshardware.com/forum/283384-33-read-first
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