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[Official] AMD Radeon HD 7950/7970/7990 Owners Thread - Page 718

post #7171 of 38701
Quote:
Originally Posted by PARTON View Post

That is an unstable overclock.

That OC is stable with fan @ 75%. These cards are very very Temp sensitive.
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post #7172 of 38701
The guy that commented on your vid said it was an instability or drivers, so I was simply saying that it was an instability, not drivers.

I'm not saying you can't hit whatever clock speed that is at a lower temp; I'm just saying that during that recorded run, the chip was unstable.
    
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post #7173 of 38701
Quote:
Originally Posted by RagingCain View Post

Official overclock blue screens if I change any settings, the BIOS is limited to 1125 MHz max frequency. I am currently not using ULPS, however I believe the Ultra Low Power State has nothing to do with overclocking, it has to do with it being unstable. Essentially what causes instability is going from idle ULPS to full load. Its buggy and often crashes CFX setups. Majority of our issues are solved here. ULPS basically stops Catalyst from completely turning off the second card and it idles like the first card does.
XLC command line just makes a registry setting that when you reboot, Afterburner doesn't limit you to the contraints of your BIOS. It doesn't even start Afterburner, it just makes the changes to afterburner, you have to remove /XCL once you are done to start Afterburner, but the changes don't take place till after reboot.
XCL from Unwinder:
Quote:
/XCL eXtends Clock Limits for official AMD overclocking APIs. Which means that it also extends clock limits for CCC or any other other vendor specific tool using official overclocking interfaces provided by AMD. Considering that it is using official AMD overclocking interface, it is compatible with ULPS. This method is equal to flashing new VGA BIOS with extended Overdrive clock limits.
However, this method uses hidded VGA BIOS emulation debug feature of Catalyst driver. Once AMD decide to remove it from driver, it will stop working. It is also necessary to re-extend clock limit after driver re-installation because VGA bios emulator resides in Catalyst registry entries.
Unofficial overclocking uses old undocumented "hole" in AMD driver, which allows to re-program PowerPlay table and bypass Overdrive clock limits. AMD used this unofficial interface in the past for their internal AMDGPUClockTool. Currently the "hole" is not supported by AMD in any way, it is incompatible with some AMDs own power saving technologies (ULPS), it has many side effects due to "nice" AMD programming skills (such as resetting fan speed and powertune to defaults, etc, etc).
Alexey Nicolaychuk aka Unwinder, RivaTuner creator
Quote:
Originally Posted by RagingCain View Post

I am only overclocking in Afterburner, and I am only overclocking with XCL (Extends Clock Limits) enabled, and ULPS (Ultra Low Power State) enabled as well. I wasn't arguing with you, I know what causes ULPS to crash thats all. Unwinder claims using XCL and ULPS is supposedly supported and I agree. Considering he has made RivaTuner, which... is a pretty big deal, I am willing to believe him. Besides I have a screenshot of it working.

Can you show me what I said that was confusing in my previous post, I apologize for any confusion, I was simply trying to understand or clarify your original post by explaining why I was doing what I was doing with a source, thats all.

3DMark2011 - 002.PNG


What you wrote in your earlier posts (even the one with all the pics) contradict what you're saying now. You're finally saying what I told you, you should have been doing. Also, you don't still understand what the difference between official and unofficial is. Official is using AMD's method and unofficial is not. If you used official overclock, then the question about using ULPS is moot, because obviously it is compatible since it is made to be used with official overclock.

And in truth this "hole" thru the driver that AMD left open which Unwinder calls xcl was actually used few years ago by Baggz aka the RBE creator. You don't even have to use -xcl, just use RACERX, the registry editor that Baggz made to go along with RBE.
Quote:
Originally Posted by PARTON View Post

The guy that commented on your vid said it was an instability or drivers, so I was simply saying that it was an instability, not drivers.
I'm not saying you can't hit whatever clock speed that is at a lower temp; I'm just saying that during that recorded run, the chip was unstable.

I concur. Btw, mem unstability looks like typical digital artifacting, blocks/squares/lines... digital mess. Core instability manifests as simply a crash or sometimes in rare (or lucky/unlucky) instances where you are right on the edge or lockup, bursts or flashes of color.
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post #7174 of 38701
Quote:
Originally Posted by tsm106 View Post

What you wrote in your earlier posts (even the one with all the pics) contradict what you're saying now. You're finally saying what I told you, you should have been doing. Also, you don't still understand what the difference between official and unofficial is. Official is using AMD's method and unofficial is not. If you used official overclock, then the question about using ULPS is moot, because obviously it is compatible since it is made to be used with official overclock.
And in truth this "hole" thru the driver that AMD left open which Unwinder calls xcl was actually used few years ago by Baggz aka the RBE creator. You don't even have to use -xcl, just use RACERX, the registry editor that Baggz made to go along with RBE.
I concur. Btw, mem unstability looks like typical digital artifacting, blocks/squares/lines... digital mess. Core instability manifests as simply a crash or sometimes in rare (or lucky/unlucky) instances where you are right on the edge or lockup, bursts or flashes of color.

Thats with memory @ Stock though.
Also would flashing to ASUS or MSI Bios help my HD 7970 in any way?
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post #7175 of 38701
Quote:
Originally Posted by ZealotKi11er View Post

Thats with memory @ Stock though.
Also would flashing to ASUS or MSI Bios help my HD 7970 in any way?

Bios flashing doesn't do anything. It meant something when the cards first came out, but since AB, Trixx, etc are working fine there's no need to hack you bios anymore.

Have you confirmed that you have zero issues at stock speeds? Also, when you overclock, do yo do it in steps? If you're not, you should be. Otherwise you're just making it more difficult on yourself.
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post #7176 of 38701
Guys, anyone with 7950 running at 1Ghz? My default clocks are 900Mhz and Afterburner reports 1.031V. ASIC Quality 72%.

I can't overclock to 1Ghz without getting instant or after 1 minute crash in Battlefield 3. What voltage do you suggest? Seemingly at least, it works nicely if I bump it to 1.055. No more crashes and I can play for hours. Do you think it's low or something?

I'd like to keep the clocks 1Ghz core and 1400 Memory and thus, I'd really like to know about yours. Do I have to worry about ULPS? Trixx kept spamming "You need to disable ULPS" but it couldn't give me option how to do it. Afterburner once, I don't know why, it kept the 1Ghz, but lowered back to default the voltage and suddenly got a crash after a tank was firing on me ( intense scene ).

Any advices or about your experiences would be much appreciated!

Drivers: 8.95.5 and just for the record, I haven't experienced a signle problem while running at default clocks.
Edited by Deo Domuique - 3/24/12 at 9:19am
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post #7177 of 38701
Quote:
Originally Posted by tsm106 View Post

What you wrote in your earlier posts (even the one with all the pics) contradict what you're saying now. You're finally saying what I told you, you should have been doing. Also, you don't still understand what the difference between official and unofficial is. Official is using AMD's method and unofficial is not. If you used official overclock, then the question about using ULPS is moot, because obviously it is compatible since it is made to be used with official overclock.

And in truth this "hole" thru the driver that AMD left open which Unwinder calls xcl was actually used few years ago by Baggz aka the RBE creator. You don't even have to use -xcl, just use RACERX, the registry editor that Baggz made to go along with RBE.


I am not sure what I am contradicting, I can't use Official Overclocking.  Any changes using AMD Overdrive cause a BSOD.  Don't know if its my Black Edition BIOS, or just Drivers.

 

Regarldess of actually working.  I was unable to overclock passed 1125 MHz in Overdrive or Afterburner.  XCL was the only option other than flashing a BIOS.

 

Nothing you guys did to unlock overclocking worked for me.  Kind of like Zealot, there seems to be a lock on overclocking.

 

XCL emulates different BIOS settings in the registry and supports AMDs API.  To the end user, it allows you to clock passed your current limitations either in BIOS or drivers installed.

 

My other settings enabled unofficial overclocking, but it doesn't seem to make a "difference" to Afterburner and my cards. Neither "Official" or "Unofficial" overclocking AB config make any difference, all the clocks registered as zero and voltage control was not available.  I just included every change I made, if this is the "contradiction" then yeah, its probably not necessary.

 

Infact, I probably just could have left that step out of the things I did.  I then learned the AMD have removed a couple of files from SysWoW64 / System32 that would give 3rd Party utilities access to overclocking.  Which I included in that quick how-to.

 

It wasn't until I enabled XCL, unlock voltage control & monitoring, add the driver files, and enabling low-level hardware access, was I able to overclock.  This is probably just specific users and not everyone.

 

ULPS doesn't have anything to do with up above.  Its a completely different setting, one I have yet to disable.

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post #7178 of 38701
XCL is a trick to unlock Overdrive limits TO USE OFFICIAL OVERCLOCKING METHOD. Dude, when you use XCL, it unlocks Overdrive in the registry, just like racerx. You then leave AB stock!, unlock voltage control, then overclock within AB. AB DOESN'T CHANGE CLOCKS, it passes this to OVERDRIVE!
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post #7179 of 38701
8.95.5 is still rocking without issues, seems to be the best driver I've used so far. Everything works PERFECT overclocking with AB and UOM tongue.gif
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post #7180 of 38701
Quote:
Originally Posted by ZealotKi11er View Post

Thats with memory @ Stock though.
Also would flashing to ASUS or MSI Bios help my HD 7970 in any way?
Quote:
Originally Posted by tsm106 View Post

Bios flashing doesn't do anything. It meant something when the cards first came out, but since AB, Trixx, etc are working fine there's no need to hack you bios anymore.
Have you confirmed that you have zero issues at stock speeds? Also, when you overclock, do yo do it in steps? If you're not, you should be. Otherwise you're just making it more difficult on yourself.

If you have good temps but would benefit from more voltage, flash the Asus overclock bios. It'll go to 1.4v with gputweak. Not recommended for air wink.gif 2d power state is not as good either.

Asus overclock bios min 2d clocks(must be set, these are not automatic, but will toggle automatically after setting up profile in gputweak)

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