Is there a way to overclock a 3870K llano and keep Cool n Quiet on?

cebalrai

Senior member
May 18, 2011
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Noob question I guess. Whenever I overclock the CPU it turns off Cool n Quiet and all four cores run at full speed at all times, creating a lot of unnecessary heat and power usage. Is there something I'm missing here?

AsRock A75M-ITX board, 4 GB DDR3 ram, Windows 7 64 bit..... Thanks in advance
 

ctsoth

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Feb 6, 2011
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Leave cool'n'quiet on and other power saving features on, overclock using voltage offset mode. This guide is for a different processor, but some of the bios settings are applicable to 3870k overclocking. Overclocking the GPU should be as simple as selecting whatever speed you want and error checking via occt. I was able to overclock to 847mhz with no voltage increase, graphics core is not stable above that point no matter what I do.

http://benchmarkreviews.com/index.php?option=com_content&task=view&id=834&Itemid=38

P.S. If you are messing with base clock and gpu frequency seperately the speed setting you choose in bios will be incorrect [on my board anyway] because it doesn't account for the change in base clock. So do the math yourself or use like gpu-z or occt to get a reading on your actual igpu speed.
 
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cebalrai

Senior member
May 18, 2011
250
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0
Leave cool'n'quiet on and other power saving features on, overclock using voltage offset mode. This guide is for a different processor, but some of the bios settings are applicable to 3870k overclocking. Overclocking the GPU should be as simple as selecting whatever speed you want and error checking via occt. I was able to overclock to 847mhz with no voltage increase, graphics core is not stable above that point no matter what I do.

http://benchmarkreviews.com/index.php?option=com_content&task=view&id=834&Itemid=38

P.S. If you are messing with base clock and gpu frequency seperately the speed setting you choose in bios will be incorrect [on my board anyway] because it doesn't account for the change in base clock. So do the math yourself or use like gpu-z or occt to get a reading on your actual igpu speed.

I'm not messing with the igpu at all, at least not right now.

So this is going to keep my cool n quiet on? By the way, that's not the BIOS I have. The one I have appears much simpler...
 
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cebalrai

Senior member
May 18, 2011
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*bump for further assistance* :p

I'd just like Cool n Quiet to remain on when I change the multiplier. Thanks in advance for any help.
 

iiiankiii

Senior member
Apr 4, 2008
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You can use programs like k10stat or phenomtweaker. Look it up. I use it to undervolt and overclock my llano. With those programs, you can disable Cool n quiet and let the program manage your multiplers. Hope this helps
 

cebalrai

Senior member
May 18, 2011
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You can use programs like k10stat or phenomtweaker. Look it up. I use it to undervolt and overclock my llano. With those programs, you can disable Cool n quiet and let the program manage your multiplers. Hope this helps

Well yeah, maybe I'm being unclear. I want Cool n Quiet to remain on because I have my fan speeds turned down for silent running. When CnQ turns off and all cores run at 100% my cpu runs hot and the fans end up turning on loudly.

The moment I change the multiplier from 30x to 31x, CnQ turns off and my configuration sucks. I want to be able to overclock while not having to run all cores stuck at 100%. Hope that clarifies things.
 

iiiankiii

Senior member
Apr 4, 2008
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Well yeah, maybe I'm being unclear. I want Cool n Quiet to remain on because I have my fan speeds turned down for silent running. When CnQ turns off and all cores run at 100% my cpu runs hot and the fans end up turning on loudly.

The moment I change the multiplier from 30x to 31x, CnQ turns off and my configuration sucks. I want to be able to overclock while not having to run all cores stuck at 100%. Hope that clarifies things.

Your cpu usage is actually running at 100% without you doing anything? If so, something is definitely wrong. Did you check your task manager to see what is using up your cpu? That doesn't sound like a cool n quiet problem. It sounds like a software problem.

By the way, you can use k10stat to automatically keep your multiplier low when your system is in idle and automatically increase the multiplier to whatever you like when it's under load. K10stat acts like cool n quiet. Except it's software based.
 

cebalrai

Senior member
May 18, 2011
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Your cpu usage is actually running at 100% without you doing anything? If so, something is definitely wrong. Did you check your task manager to see what is using up your cpu? That doesn't sound like a cool n quiet problem. It sounds like a software problem.

By the way, you can use k10stat to automatically keep your multiplier low when your system is in idle and automatically increase the multiplier to whatever you like when it's under load. K10stat acts like cool n quiet. Except it's software based.

Yeah in CPU-Z when I overclock to 3.1 it shows all cores sitting at 3100 mhz and I have the elevated heat reading to show that it's not just a CPU-Z glitch. When it's not overclocked the cores drop back to something like 800/1600/2100 depending on the load. What kind of software problem could it be?

I've heard of K10stat but never tried it. Is there a reliable download source you can recommend for it? It appears that there a ton of really shady looking ones out there.
 

iiiankiii

Senior member
Apr 4, 2008
759
47
91
Yeah in CPU-Z when I overclock to 3.1 it shows all cores sitting at 3100 mhz and I have the elevated heat reading to show that it's not just a CPU-Z glitch. When it's not overclocked the cores drop back to something like 800/1600/2100 depending on the load. What kind of software problem could it be?

I've heard of K10stat but never tried it. Is there a reliable download source you can recommend for it? It appears that there a ton of really shady looking ones out there.

ahh.. it seems that your cpu isn't actually under load. Instead, it seems like the multiplier are locked at the highest setting. If that's the case, just install k10stat. You can download it from here: https://sites.google.com/site/k10stat/

Also, you need to set up task scheduler to get k10stat to run at start up. It's a bit more work. However, the end result is pretty amazing. You can set the voltage for each multiplier setting. Usually, this means that you can undervolt at each multipier stepping. As result, it will be better than standard Cool 'n Quiet because it will actually use less power and produce less heat. You can find more info here: http://unfusedjournal.blogspot.com/2011/02/k10stat-tutorial.html

Hope this helps.