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Amd phenom 955 cpu fan throttling before shutdown!!

14 posts · originally from https://geek.digit.in/community/threads/amd-phenom-955-cpu-fan-throttling-before-shutdown.137400/

vishalg
vishalg Original post #1
Mar 1, 2011 at 9:00 PM
hello guys!!

i am facing a unique problem with my stock cpu fan

many a time when i shutdown/standby my system the cpu fan suddenly throttles to full speed and then shutsdown

it happens even when the temps are normal

my temps
idle-35 load-51

it is totally random

the system was oced to 3.4 via asus cpu levelup, but it happens even after disabling it

kindly help
coderunknown
Mar 2, 2011 at 1:19 AM
are you using any Asus power saver software that came with the motherboard? is AMD Cool&Quite on?
vishalg
vishalg #3
Mar 2, 2011 at 7:09 AM
no i aint using any asus power saver sw
& yes C&Q is on
coderunknown
Mar 2, 2011 at 7:41 PM
can you post 2 CPU_Z tab. 1st with the system in idle & the 2nd one with the system in load so all 4 cores are running at their rated clock speed.
vishalg
vishalg #5
Mar 2, 2011 at 8:29 PM
sure, here they are
vamsi_krishna
Mar 2, 2011 at 10:55 PM
Is it for a brief moment? like a second or two?
coderunknown
Mar 3, 2011 at 1:09 AM
so cool&quite is doing its job fine & the sound comes only in time of shutting down & that also sometimes.

missed 1 important point. can this be due to Asus Q-fan?
vishalg
vishalg #8
Mar 3, 2011 at 11:20 AM
@vamsi_krishna

yes it is for a sec. or two before shutting down, its just like when you blip the throttle of a bike


@Sam.Shab

will try disabling it and then report, but i highly doubt it
vishalg
vishalg #9
Mar 4, 2011 at 11:59 AM
no effect even after disabling q fan :(
vamsi_krishna
Mar 4, 2011 at 2:05 PM
I will get this thing as well. Not all the time, but some times.

I just ignore it, thinking that, may be CPU temps are high, as it is shutting down ( possible load). So, fan starts to accelerate. And it might continue, but.. as it is a shutdown process, Fan has to stop. So, we will hear it for a brief period.

Don't know if my conspiracy theory is correct. But, thats what I think.
vishalg
vishalg #11
Mar 4, 2011 at 7:10 PM
i monitor cpu temps through hw monitor and many a times when this throttling happens the cpu temps are normal!!

do you also have an 955 with stock cooler?
asingh
asingh #12
Mar 4, 2011 at 10:57 PM
Does it spin up rapid when you initiate a shut down from the OS, OR it spins up hyper and the system crash shut downs..?
vishalg
vishalg #13
Mar 5, 2011 at 2:58 PM
not while initiating the shutdown, but second or do before the system powers down totally

it happens on normal system shutdowns and system also shutsdown properly
vishalg
vishalg #14
Mar 13, 2011 at 9:15 PM
any head way in this case guys...................................................??