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i5 6600k no longer remains stable after removing overclock

Hello everyone,

 

2,5 years ago I bought an i5 6600k together with a MSI z170 SLI PLUS motherboard (<- budget motherboard, below 100 euros/dollars at that time) as part of my first gaming-only rig. I overclocked the cpu to 4.5GHz on all cores with a voltage offset of +0.160 (resulting in about 1.288v or the like). This was at that time prime95 stable and everything.

 

However, I do want to upgrade my cpu so I was thinking about moving my 6600k to my unraid server. To prepare for this I removed the overclock (i dont want it to be overclocked because of 24/7 power draw) and was about to measure the power, when my system got a bsod. Even after a BIOS reset it still keeps on bsodding.

 

I've found out that If I select the "high performance" power scheme it does run fine, no bsods whatsoever, and even runs fine in prime95. But if I select balanced or power saving, it immediately crashes.

This got me thinking, is my cpu or motherboard no longer capable of running at lower frequences with less voltage (c-states)? Cause at the high performance powerplan, it does never go lower than the base clock of 3.5GHz, nor lower voltage. At balanced or power saving, it does drop down (since it has c-states enabled), according to cpuz 800-3900mhz is the range there.

 

Is there anyway to find out if this is what is causing the issue for me? And is it possible to determine if this is mobo (vrm) related or cpu?

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Probably a slight degradation caused by running the CPU overclocked for years with a higher voltage.

M.S.C.E. (M.Sc. Computer Engineering), IT specialist in a hospital, 30+ years of gaming, 20+ years of computer enthusiasm, Geek, Trekkie, anime fan

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Hmm so if I want to use the i5 in a non-overclockable motherboard, I have no choice other than to disable the c-states and run at 35-39 multiplier only?
Also, when I'm buying my new cpu I was (and probably still am) planning on overclocking it. Is this degradation something that is less common to occur on higher end motherboards? I'm planning on going for a 9900k with a Gigabyte Aorus Elite (or Pro) which are supposed to have very good vrms.

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8 minutes ago, 191x7 said:

Probably a slight degradation caused by running the CPU overclocked for years with a higher voltage.

Lol please..... Not a chance.

19 minutes ago, Incognito Clown said:

Hello everyone,

 

2,5 years ago I bought an i5 6600k together with a MSI z170 SLI PLUS motherboard (<- budget motherboard, below 100 euros/dollars at that time) as part of my first gaming-only rig. I overclocked the cpu to 4.5GHz on all cores with a voltage offset of +0.160 (resulting in about 1.288v or the like). This was at that time prime95 stable and everything.

 

However, I do want to upgrade my cpu so I was thinking about moving my 6600k to my unraid server. To prepare for this I removed the overclock (i dont want it to be overclocked because of 24/7 power draw) and was about to measure the power, when my system got a bsod. Even after a BIOS reset it still keeps on bsodding.

 

I've found out that If I select the "high performance" power scheme it does run fine, no bsods whatsoever, and even runs fine in prime95. But if I select balanced or power saving, it immediately crashes.

This got me thinking, is my cpu or motherboard no longer capable of running at lower frequences with less voltage (c-states)? Cause at the high performance powerplan, it does never go lower than the base clock of 3.5GHz, nor lower voltage. At balanced or power saving, it does drop down (since it has c-states enabled), according to cpuz 800-3900mhz is the range there.

 

Is there anyway to find out if this is what is causing the issue for me? And is it possible to determine if this is mobo (vrm) related or cpu?

set the voltage manually, adaptive isn't feeding your cpu enough juice. Thats why when you select higher performance mode you're not BSoD because its getting the volts it needs, you should never use adaptive when overclocking or not.

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6 minutes ago, Benjeh said:

set the voltage manually, adaptive isn't feeding your cpu enough juice. Thats why when you select higher performance mode you're not BSoD because its getting the volts it needs, you should never use adaptive when overclocking or not.

Shouldnt it be like that? You buy a motherboard, you install your cpu and youre ready to rock? I believe adaptive is the default, so it should not cause bsods then?

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1 minute ago, Incognito Clown said:

Shouldnt it be like that? You buy a motherboard, you install your cpu and youre ready to rock? I believe adaptive is the default, so it should not cause bsods then?

Is your bios up to date, and no. It will have settings to get it running but they won't be optimal for your parts, they're blanket settings. My ram says its rated for 3200mhz 16-18-18-38 I now have it set to 3333mhz 15-16-16-34, are you picking up what i'm putting down? ?

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2 minutes ago, Benjeh said:

Is your bios up to date, and no. It will have settings to get it running but they won't be optimal for your parts, they're blanket settings.

But the default settings do not "get it running" since it will cause bsods almost immediately on "optimized defaults" bios settings and default windows settings (= balanced power scheme).

Quote

My ram says its rated for 3200mhz 16-18-18-38 I now have it set to 3333mhz 15-16-16-34, are you picking up what i'm putting down? ?

Then it should still be able to run at JDEC speed of 2133 with default voltages and timings without causing BSODs

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Just now, Incognito Clown said:

But the default settings do not "get it running" since it will cause bsods almost immediately on "optimized defaults" bios settings and default windows settings (= balanced power scheme).

Then it should still be able to run at JDEC speed of 2133 with default voltages and timings without causing BSODs

Like i said, depends if you have the latest bios. 

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So if I have or get the latest one, it should run with stock settings?

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