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[Official] AMD Radeon HD 7950/7970/7990 Owners Thread - Page 354

post #3531 of 38701
Thread Starter 
Quote:
Originally Posted by PenguinoPapa View Post

Your 1070 MHz plateau is strictly in OCCT, then?
Anything that can give the card a similar load.
After a certain point the card will black screen when overclocking higher under load.
I don't know exactly what's causing it.
Limitation of the VRM design is my guess.
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post #3532 of 38701
Quote:
Originally Posted by Evil Penguin View Post

Anything that can give the card a similar load.
After a certain point the card will black screen when overclocking higher under load.
I don't know exactly what's causing it.
Limitation of the VRM design is my guess.

Well, that's a bummer. I have to admit, I'll be more than a little disappointed if I can't get anything past 1075 to be stable.
post #3533 of 38701
Thread Starter 
I wonder how high people can overclock their 7970 with PowerPlay disabled. thinking.gif
Anyone that is watercooling their 7970 want to give it a try and run OCCT?
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post #3534 of 38701
Quote:
Originally Posted by Evil Penguin View Post

I wonder how high people can overclock their 7970 with PowerPlay disabled. thinking.gif
Anyone that is watercooling their 7970 want to give it a try and run OCCT?

ASUS OC BIOS has PowerPlay disabled (or modified to not allow lower core clock than 925MHz)
And about your problems with OCCT. I think you are right, ist's caused by someting like OverCurrent Protection.
Card's hardware doesnt allow VRM bypass some level of amperage and power down card...
In my opinion it depends on amperage not voltage
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post #3535 of 38701
Quote:
Originally Posted by lothar View Post

Quote:
Originally Posted by Evil Penguin View Post

I wonder how high people can overclock their 7970 with PowerPlay disabled. thinking.gif
Anyone that is watercooling their 7970 want to give it a try and run OCCT?

ASUS OC BIOS has PowerPlay disabled (or modified to not allow lower core clock than 925MHz)
And about your problems with OCCT. I think you are right, ist's caused by someting like OverCurrent Protection.
Card's hardware doesnt allow VRM bypass some level of amperage and power down card...
In my opinion it depends on amperage not voltage

That could explain my problems. I haven't flashed to the Asus BIOS. I fixed it though, by running MSI AB Profiles. It's set to run stock clocks during 2D, and overclocked during 3D. That fixed my issues 110%. smile.gif
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post #3536 of 38701
Quote:
Originally Posted by pioneerisloud View Post

That could explain my problems. I haven't flashed to the Asus BIOS. I fixed it though, by running MSI AB Profiles. It's set to run stock clocks during 2D, and overclocked during 3D. That fixed my issues 110%. smile.gif

Perhaps you had a powerplay issue? How the card changes clocks between the different power states is powerplay's job. How were you overclocking? Did you disable powerplay by accident?

Technically, you don't have to set a 2D clock with AB. If you leave it blank, it will go default stock clock at idle times, which will then get passed over to powerplay which will drop clocks down to low power mode, 350/150.
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post #3537 of 38701
Quote:
Originally Posted by pioneerisloud View Post

That could explain my problems. I haven't flashed to the Asus BIOS. I fixed it though, by running MSI AB Profiles. It's set to run stock clocks during 2D, and overclocked during 3D. That fixed my issues 110%. smile.gif

I feel more needed now applaud.gif
Afterburner is hands down the most advanced tuner of them all.
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post #3538 of 38701
Quote:
Originally Posted by tsm106 View Post

Perhaps you had a powerplay issue? How the card changes clocks between the different power states is powerplay's job. How were you overclocking? Did you disable powerplay by accident?
Technically, you don't have to set a 2D clock with AB. If you leave it blank, it will go default stock clock at idle times, which will then get passed over to powerplay which will drop clocks down to low power mode, 350/150.

Actually if you leave it blank it keeps whatevers applied in Afterburner.... It works best when you set 2D to run of a default set profile wink.gif
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post #3539 of 38701
I went ahead and forced stock on Profile 1 anyway, just to be sure.

So yes, I probably DID have powerplay issues. I have absolutely no clue how to disable them. I was just using MSI AB to overclock, or Trixxx....or CCC. Never a combination of them though. Didn't matter what I used, it would crash after a while (either idle, or when I'd try to open a game up after being idle). Since I started using them MSI AB profiles, and forcing it to stock in 2D....no issues. biggrin.gif
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post #3540 of 38701
Quote:
Originally Posted by Denim-187 View Post

Actually if you leave it blank it keeps whatevers applied in Afterburner.... It works best when you set 2D to run of a default set profile wink.gif

I read that unwinder got AB to pass clocks over to catalyst now, but in the past it worked horribly. You'd end up with one card maxed out or mismatched clocks on cayman gpus. It was whacked. Maybe that's why I didn't think to use 2D clocks, old habits die hard, lol. Thank gawd for RBE during that time. Anyways, I agree that AB has come a long way, especially in regards to powertune.
Quote:
Originally Posted by pioneerisloud View Post

I went ahead and forced stock on Profile 1 anyway, just to be sure.
So yes, I probably DID have powerplay issues. I have absolutely no clue how to disable them. I was just using MSI AB to overclock, or Trixxx....or CCC. Never a combination of them though. Didn't matter what I used, it would crash after a while (either idle, or when I'd try to open a game up after being idle). Since I started using them MSI AB profiles, and forcing it to stock in 2D....no issues. biggrin.gif

Is your card kicking down all the way to low power mode?
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