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Crossfire 6870s memory underclocking

post #1 of 15
Thread Starter 
Is there a way to force the memory clocks to a lower clock while using dual monitors? I run dual monitors quite frequently and I would like them to run ideally around 200mhz core 5/600mhz memory clocks instead of the 300mhz/1050mhz speeds they've been running at since building this rig.

idle on the 6870s is ~41 C with a single monitor, ~51 C with dual monitors with about a 20 C ambient room temperature.
post #2 of 15
Sorry but I dont see the need to underclock the cards?
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post #3 of 15
clocktweak can do it.
Lets you change the clock speed of all the clock profiles.
But I dont see why you would want to, 51 C is perfectly fine temp and changing the memory clock speeds will be no difference to temp and very little difference to power useage.
post #4 of 15
That is why I asked, there really is no reason to underclock, your setup works fine, enjoy it :-D
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post #5 of 15
Thread Starter 
I'm wanting to underclock the memory because i dont see the need for the memory to run at full speed all the time when im just browsing the web/video chatting.

@bmg, thanks ill look into it!
Edited by Diablo85 - 1/31/12 at 5:23pm
post #6 of 15
Quote:
Originally Posted by Diablo85 View Post

I'm wanting to underclock the memory because i dont see the need for the memory to run at full speed all the time when im just browsing the web/video chatting.
@bmg, thanks ill look into it!

I wouldnt worry about it, temps/power draw will not change hardly at all if you lower speeds a bit
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post #7 of 15
Quote:
Originally Posted by Diablo85 View Post

Is there a way to force the memory clocks to a lower clock while using dual monitors? I run dual monitors quite frequently and I would like them to run ideally around 200mhz core 5/600mhz memory clocks instead of the 300mhz/1050mhz speeds they've been running at since building this rig.
idle on the 6870s is ~41 C with a single monitor, ~51 C with dual monitors with about a 20 C ambient room temperature.


That's easy but don't put it too low or the screen will flicker.

 

Just create your profile; http://www.techpowerup.com/forums/showthread.php?t=117633
 

 

 

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ケンジ
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post #8 of 15
Thread Starter 
Quote:
Originally Posted by Ken1649 View Post

That's easy but don't put it too low or the screen will flicker.

Just create your profile; http://www.techpowerup.com/forums/showthread.php?t=117633

very helpful, however even following those steps exactly, and editing the proper values, it does not bring my memory clocks lower. nor does it "force" the 3D clocks to the set value i have in the profile even with aero and overdrive disabled.
post #9 of 15

Did you activate the profile created as in the instruction?

 

From CCC upper right corner, select "Restore Factory Default" restart PC.

 

If you have third party such as Afterburner, Trixx or whatever in the system, select "Reset" then restart PC.

 

Acivate the provide tou created.

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ケンジ
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post #10 of 15
Thread Starter 
hrm....so, apparently when running a dual monitor setup, it forces the cards into 3D high performance mode...which of course would conflict with my gaming unless i set up application profiles for each game.... >.< grr. scrapping this idea permanently.
Edited by Diablo85 - 1/31/12 at 7:43pm
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