Topic Title: AMD Radeon 8750M stuck at boost clocks when used.
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Created On: 07/22/2014 01:46 PM
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 07/22/2014 01:46 PM
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avtella
Peon

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Joined: 07/22/2014

I have a Samsung NP300 laptop with a Radeon 8750M 1GB DDR3.

When playing games or if used at all it automatically clocks to 825 MHz GPU / 900 MHz RAM, even when it hits temps of 96C-100C. It wont use any of the inbetween clocks like 775 and 650 MHz. The excessive heat from the GPU causes my CPU to throttle. If I use MSI afterburner to downclock to 650 MHz then I have no issues, max temps are at 85-86C

I have to set Power Play to "Max Battery Life" and it will top off at 400 MHz GPU / 600 MHz RAM and then it stays fairly cool.

Samsung advised me to use AMD website drivers and I had the issue even with drivers from Samsung. I examined the VGA Bios ffs module of the bios downloaded from Samsung and clearly there are 650 and 775 Mhz clocks listed, so I dont get why the driver uses the all or nothing settings.

Is there anyway you could add an inbetween profile for powerplay, ie 650Mhz? Intel has - Performance / Balanced / Power Save profiles, why cant AMD do the same.

I am using Catalyst 14.RC1 currently. I have even reinstalled windows with various versions of Catalyst and still the same issue



Edited: 07/22/2014 at 02:42 PM by avtella
 07/27/2014 04:51 AM
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D.VINE
Peon

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Joined: 07/25/2014

I have a simliar problem, stuck @ idle clocks and low performance settings.

It would be interesting to know, if your Radeon ever worked properly and/or when did that problem occur to you.

If your card gets that hot, then there obviously is a problem with cooling/fan and a Powerplay problem to boot.



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ALIENWARE M17x-R2 | Samsung 16GB Ram | AMD HD8970m 4GB | Panasonic BD UJ265 | Intel SSDs | MS-Windows 8.1

 07/27/2014 02:49 PM
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avtella
Peon

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It runs much cooler at 650Mhz, even a friend's Dell had similar issues. And as for your question I had this issue since getting it.

It should throttle down at 90-95C, or at least give an option to disable boost clocks.

They should really have a middle option in Power Play between "Performance" and "Battery Save". I filed a complaint, but no response from AMD so far.

Intel has a "Balanced" option for their IGPs, AMD should do the same.

 

I opened my Bios VGA ffs module and found that it uses 1100mv at 825Mhz and 1000mv at 650Mhz, its one of the reasons for the heat being much greater.

 

By the way, laptop are you using?

 07/27/2014 04:17 PM
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D.VINE
Peon

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I am using a 4-year old (just checked that, lol) ALIENWARE M17x-R2

MSI-Afterburner is a powerfull tool to override POWERPLAY settings (although it seems, that mv adjustments could be a little more precise), but i learned, that those settings don't kick in for a reason. I think you are right, AMD/ATI should offer 3 "states" in their CCC settings:

High performance (3D gaming/apps)

Medium Performance (2D gaming/apps, videos etc.)

Idle Performance (2D desktop, internet browsers, office apps etc.)

They actually include those in the vga bios of their cards, so i wonder why they don't let us access those in a proper way in the CCC.

How old is your laptop? Have you ever cleaned the fans and renewed cooling pads/paste on the GPU/CPU?

 



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ALIENWARE M17x-R2 | Samsung 16GB Ram | AMD HD8970m 4GB | Panasonic BD UJ265 | Intel SSDs | MS-Windows 8.1

 07/27/2014 10:04 PM
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avtella
Peon

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Joined: 07/22/2014

My laptop is one year old this month, I actually cleaned the fan yeaterday, barely any dust in it.

It actually runs fairly cool normally. AMD GCN 7700/8700 series cards in most 15.6" laptops I know reach 90-95C in my experience including the Dell Inspiron 1501, and others. Yours being a dedicated larger gaming laptop probably runs a bit cooler.

 07/31/2014 05:08 PM
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D.VINE
Peon

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Btw, are you using an external monitor?



-------------------------

ALIENWARE M17x-R2 | Samsung 16GB Ram | AMD HD8970m 4GB | Panasonic BD UJ265 | Intel SSDs | MS-Windows 8.1

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