intel quad q9550 cpu audio crackles SOLVED!!!! disabled EIST

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ARCADIOS
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intel quad q9550 cpu audio crackles SOLVED!!!! disabled EIST

Post by ARCADIOS » Sun Dec 10, 2017 3:51 am

hi,
I recently changed(upgraded) my core duo 6500 dual core cpu to the quad 9550.
the socket is 775

the quad 9550 is a bettter cpu and has 4 cores.
I experience some audio random pops and crackles whit Ableton Live.
I wonder if it is much of a mess that cpu uses 4 cores :-?
Last edited by ARCADIOS on Mon Dec 11, 2017 8:49 am, edited 1 time in total.
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Re: intel quad q9550 cpu audio crackles

Post by nomagic » Sun Dec 10, 2017 5:58 am

I have an older i7 (3930K) with 6 cores. I had random pops with cubase.
After i deactivated hyperthreading and some performance/energy-settings in bios everything is fine now.

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Re: intel quad q9550 cpu audio crackles

Post by garyb » Sun Dec 10, 2017 11:08 am

4 cores is not an issue.

follow the setup suggestion in the tips and tricks section. be sure you don't have an old bios.

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Re: intel quad q9550 cpu audio crackles

Post by ARCADIOS » Mon Dec 11, 2017 7:41 am

I disabled cpu EIST in bios and pops and crackles disappeared completely!!! :) :) :)
I should have done this with the older 2 core cpu, but random clicks were less than on the 4 core cpu...

I see that in the tips section of planetz, garyb advices us to disable a whole list of cpu functions...
but I disabled only EIST which gave me the result...
am I missing something that I have all other like C1 enabled???
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Re: intel quad q9550 cpu audio crackles SOLVED!!!! disabled

Post by garyb » Mon Dec 11, 2017 4:58 pm

EIST is the worst offender.

what this is about is that the CPU gets run at very low voltage at idle to save power. when a program asks for more processing, it is supposed to ramp up the CPU's power. it's great, except it's too slow for a realtime device like Scope.

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Re: intel quad q9550 cpu audio crackles SOLVED!!!! disabled

Post by ARCADIOS » Mon Dec 11, 2017 9:28 pm

Using cpu monitor I observed that disabing EIST the frequency of the cpu remains at its top..because the multiplier is at the high number...in my case 8.5.... But I see that voltage of cpu is changing..... I dont actually care since cracks disappeared....and cpu raised temperature for very litle...about 3 degrees celcieus(according to cpu monitoring)... Just saying
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Re: intel quad q9550 cpu audio crackles SOLVED!!!! disabled

Post by garyb » Mon Dec 11, 2017 9:29 pm

if you're saying it's not needed, you are correct.

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Re: intel quad q9550 cpu audio crackles SOLVED!!!! disabled

Post by ARCADIOS » Mon Dec 11, 2017 10:38 pm

Eist.....not needed.... Must be disabled
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