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NEED HELP. HD6970 Overclock problems!

post #1 of 12
Thread Starter 
So I'm going to try to type this quick and simple seeing as I can barely see my screen. I decided to OC my HD6970 (I'm not a noob to doing this) and I am using Trixx.

I started by making a decent custom fan speed graph. All was good.
Then I read up about this AMD Power Control Settings and Trixx's board power Li. Made sense to me, so I changed it up and did some benchmarks and what not. Seemed to not gain performance when I went above +14, so I applied +14 and left it.

I wanted to check some gameplay to look for gains. That's when it started. MASSIVE SCREEN TEARING. Absolutely crazy.
I want to make it clear, I did NOT change voltage or clock speeds. And temperature doesn't go over 79C MAX.
Only way to fix it is to cold boot. And it works fine until I try to apply the changes again. It seems to appear more in the browser than games, the tearing that is.

Any idea why this is causing crazy screen tearing? And what can I do to fix the problem? I want to get this fixed so I can actually enjoy the performance gains and then start playing with clock speeds. Thanks! biggrin.gif
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post #2 of 12
memory overclock is too high, either up the voltage a tiny bit or back down the memory overclock
   
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post #3 of 12
Thread Starter 
Quote:
Originally Posted by Remnant88888888 View Post

memory overclock is too high, either up the voltage a tiny bit or back down the memory overclock

I never touched the memory clock though, it's all still at stock speeds? Also don't have any control over the video memory voltage it seems, not with Trixx anyhow. =/
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post #4 of 12
USE msi afterburner, and up your voltage a tiny bit.
try a different setting other than +14... i think your talking about LOD but im not sure
   
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post #5 of 12
Thread Starter 
Quote:
try a different setting other than +14... i think your talking about LOD but im not sure

I'm talking about AMD's Powertune. Seems they released it for the HD6900 series as well as the HD7xxx series.

Here is a bit of info on it to make sure we're talking about the same thing:

http://www.tomshardware.com/reviews/radeon-hd-6970-radeon-hd-6950-cayman,2818-5.html

and I found this posted in another OCN discussion:
Quote:
In the slider’s default position, the coprocessor that governs AMD PowerTune will intelligently manage the GPU’s core clockspeed based on the default thermal profile of the product; a hypothetical enthusiast product might be 225W.

From there, AMD PowerTune is essentially biased towards maintaining the clockspeed defined by the user or vBIOS, whichever is higher. This is driven by the AMD PowerTune logic, which forecasts the GPU’s future temperature based on the past few microseconds of activity.

Now that you know that, it’s easier to understand how the Board Power Li slider works. By decreasing the slider into the negative range, the user can effectively tell the AMD PowerTune logic to simulate a board with a TDP that’s up to 20% lower. This could be good for HTPCs or power-constrained SFF systems with smaller PSUs. In contrast, increasing the slider can effectively raise the board’s TDP by 20% of the baseline.

If a user attempts to run an application that pushes the GPU to exceed the current TDP threshold, the board may throttle the clockspeed, which would cause a dip in performance. With this in mind, overclockers should make sure to increase the AMD PowerTune slider to accommodate the new thermal load introduced by a higher GPU clockspeed.

So I have essentially moved my slider to +14 and I am experiencing problems.
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post #6 of 12
Its probably too hot
   
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post #7 of 12
Thread Starter 
Quote:
Originally Posted by Remnant88888888 View Post

Its probably too hot

The GPU is only hitting 79C in Furmark, which is definitely not anywhere near overheating. You figure the video memory may be getting too hot though? And if so, there isn't much I can do about that =/

I'll try maxing out the fan and seeing if the same thing happens, if it doesn't then I guess I can assume it's an overheating issue of some sort. Will report back with results.
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post #8 of 12
Screen tearing?

Screen tearing occurs when your framerate and refresh rate of your monitor (typically 60hz) do not match. This is fixed w/ Vsync in your game options.



It sounds to me like you're referring to artifacting, but perhaps not.

My advice:

Uninstall Trixx and test AMD powertune from the Catalyst Control Center. Also, uninstall and reinstall your drivers.

The overclocking on 6970 isn't too great. My card could hit 950/1450 on stock volts, but only 1000/1475 with increased voltage, it was simply not worth it to have Afterburner running all the time when I could achieve those clocks through CCC.
post #9 of 12
Thread Starter 
It is definitely not an overheat issue. I just completely busted that theory.

It's strange that it still happens even after the settings are changed back to stock until I reboot the system. =/
Quote:
Screen tearing?

Screen tearing occurs when your framerate and refresh rate of your monitor (typically 60hz) do not match. This is fixed w/ Vsync in your game options.



It sounds to me like you're referring to artifacting, but perhaps not.

It's not screen tearing in the conventional sense, but it is the closest thing I can relate it to. It isn't like artifacting that I've seen before, but perhaps it is just another form of it. It appears as if the screen is being split at random spots and things that should be appearing on the right of screen may be out of place and appear on the left side for an instant but it does this quick and repeatedly. Hope that gives you a bit of an idea.
Quote:
My advice:

Uninstall Trixx and test AMD powertune from the Catalyst Control Center. Also, uninstall and reinstall your drivers.

The overclocking on 6970 isn't too great. My card could hit 950/1450 on stock volts, but only 1000/1475 with increased voltage, it was simply not worth it to have Afterburner running all the time when I could achieve those clocks through CCC.

I'll try uninstalling Trixx and test the powertune straight from CCC. I don't think a driver re-install will fix anything, I actually just installed these drivers right before doing this and all seemed fine. Running 13.1 currently. Nonetheless, I'll re-install to be on the safe side. Thanks for the advice! I'm off to work right away, but I'll report back with the results as soon as I can biggrin.gif

Oh also, I was using Trixx because my card is a sapphire and I was under the understanding that Afterburner did not allow powertune or voltage control for the HD6970 (with the exception of the actual MSI card), is that true? Thanks smile.gif
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post #10 of 12
Quote:
Originally Posted by CrazyDiamond View Post

It is definitely not an overheat issue. I just completely busted that theory.

It's strange that it still happens even after the settings are changed back to stock until I reboot the system. =/
It's not screen tearing in the conventional sense, but it is the closest thing I can relate it to. It isn't like artifacting that I've seen before, but perhaps it is just another form of it. It appears as if the screen is being split at random spots and things that should be appearing on the right of screen may be out of place and appear on the left side for an instant but it does this quick and repeatedly. Hope that gives you a bit of an idea.
I'll try uninstalling Trixx and test the powertune straight from CCC. I don't think a driver re-install will fix anything, I actually just installed these drivers right before doing this and all seemed fine. Running 13.1 currently. Nonetheless, I'll re-install to be on the safe side. Thanks for the advice! I'm off to work right away, but I'll report back with the results as soon as I can biggrin.gif

Oh also, I was using Trixx because my card is a sapphire and I was under the understanding that Afterburner did not allow powertune or voltage control for the HD6970 (with the exception of the actual MSI card), is that true? Thanks smile.gif

It might not be a problem w/ Trixx at all, but it is certainly worth testing to eliminate the possibility. I think afterburner would work w/ all voltage unlocked 6970's, but don't quote me on that. I'm certain it worked w/ my Gigabyte reference 6970. I have personally never used Trixx.
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