Cool'n'Quiet almost instant crashes for ASUS M5A99X EVO + Phenom II X4 B55

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lberstein

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Sep 11, 2013
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Hello everyone. I've searched the forums and googled intensely but can't find any similar threads and therefore no answers.

I'm running an unlocked Phenom X2 555, which worked flawlessly from day 1, automagically unlocked by my mobo and recognized as a Phenom II X4 B55. The mobo is an ASUS M5A99X-EVO. This sytem has never caused any trouble in the several months I've had it.

I tried to turn cool'n'quiet on when I first set up the system, but it crashed after a few minutes, so I turned it off.

Recently, due to increasing outside temps, I've become more and more annoying with the noise from the speeding fans, so I decided to turn on cool'n'quiet again with a more insistent approach. Temps stay around ~45ºC for both MB and CPU on normal daily use, which I'd like to be lower but it's still not alarmingly high. This PC is not used for gaming and doesn't sustain intense load.

My mobo has 3 possible settings for CnQ:

1) Always enabled
2) Always disabled
3) Disabled by CPU

Option 1 hangs the system after about 1 or 2 minutes (presumably when it's done booting and loading windows, and it attempts to throttle down the CPU?). Option 2 and 3 are stable but CnQ is disabled, and CPU clock stays at 3.2 GHz (stock).

Am I doing something wrong? Maybe forgetting some other setting I should adjust? Is it not possible to run CnQ with an unlocked CPU?

I'm not exactly sure what information is relevant to the problem, so please let me know about anything you need to know.
 
Solution
K

Its not every unlocked CPU probably, just yours. Stability has many definitions. For your use, I guess its fine. I would do a stress test to test for rock solid stability. Since you have no issues, that's fine though.
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kirilmatthew

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Jul 24, 2013
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OCed CPUs don't work well with CnQ. I say this from experience, my athlon II x2 at 4.08Ghz crashes instantly with CnQ as well. It worked fine with CnQ not OCed. There's really not much you can do with it OCed.. I wish I could use CnQ too, but I wouldn't give up my OC for it.
 
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lberstein

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Sep 11, 2013
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My CPU is not overclocked (nor is anything else in the system). It runs at stock voltage, clock and speed. It only has been UNLOCKED by the motherboard since it was marketed as a Phenom X2 555, but was actually a Phenom II X4 with 2 cores locked. Apart from that, I've never modified any stock values either on the CPU nor the MB.
 
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kirilmatthew

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Jul 24, 2013
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Yes, however these cores are not guaranteed to work by AMD. They were disabled because they failed AMD's certification for the phenom II x4. You have done something that AMD cannot guarantee will work. These cores could have problems scaling frequencies/ voltages or something like that. Also have you tested stability?
 
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lberstein

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Sep 11, 2013
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That was precisely one of my questions: is it not possible to run CnQ with unlocked cores? Does it always fail, for all unlocked CPUs, or am I just unlucky?

Define "test stability" please. I've used my computer daily for several months without ever having it crash, hang nor BSOD. AS I said, I'm not an OCer, and I don't do push the system in any way as this is not my gaming computer.
 
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kirilmatthew

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Jul 24, 2013
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Its not every unlocked CPU probably, just yours. Stability has many definitions. For your use, I guess its fine. I would do a stress test to test for rock solid stability. Since you have no issues, that's fine though.
 
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Solution
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lberstein

Honorable
Sep 11, 2013
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10,510
Thanks for your replies and time kirilmatthew. I had gone so far as "it's probably not every CPU" by myself, but I was looking for something a bit less subjective and guessy and a bit more solid and fact-based. I can't be very CPU or it would be very easier to find the issue by googling it. Since I can't seem to find any info on the matter, I'm guessing it only affects a tiny portion of all unlocked CPUs, and that's precisely why I opened this thread.

Has anyone else had trouble with Cool'n'quiet + unlocked CPUs? And most important, has anyone managed to fix it, apart from turning off C'n'Q? Is it really due to the unlocked CPU, or maybe I'm setting something else wrong? has anyone come up with a series of steps to detect and eventually fix C'n'Q issues?
 
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kirilmatthew

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Jul 24, 2013
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My guess is that there's no info about it because people simply don't care. I'd say it affects a sizable amount of people. Not only that, but I believe people don't realize what exactly causes it, because most people over clock as well. Most people don't care about CnQ
 
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