i7 2600K Fine Tuning Overclock questions (speedstep,offset,etc..)

Hi overclockers,
I've bought an i7 2600k an year go and got it constantly overclocked without any trouble or crash for about a year @4,4GHz.

MY SETTINGS ->
Multi: 44X
Offset Mode -0.020mV
Add. Turbo Voltage: +0.008mV
LLC: level 2
C1E State: Enabled (not the others C3/C6)
SpeedStep: Enabled
SpreadSprectum: Disabled

I'm quite happy with that but also with heavy stress cpu benchark Vcore peak at 1.368mV. A bit too high for lower temps! (Im using a Noctua U14S, single fan, which is good), and my temps reach 74°C max at those settings, where ingame less than 70°C but over 65°C usually.
I want really to lower down the voltage, but keeping the SpeedStep function enabled, because my pc is working 24/7, and I prefer to not use fixed voltage (even if lower) constanly.
What's your suggestion about it?
I know there are also two other way to go: 1) fixed vcore with speedstep but at 1.6GHz cpu is feeded with too high vcore and 2) fixed vcore without speedstep to give more stable performance an maybe lower vcore a bit (so I have lower vcore at full load but higher vcore at idle than offset mode).

My intention is to keep power saving functions and use less voltage under load, but offset mode can't allow it because undervolt also at idle
And except for the power saving I'm worried about cpu life by keeping a fixed voltage on idle (around 300mV higher than usual).

 

Have you checked in bios what kind of fancurve your cpu fan uses? Maybe its not even utilized to its fullest and that might be a way to get the temps down a little bit.

 

I set it to full settings and target at 45°C

 

Increasing the uncore voltage would allow you to decrease the vcore voltage but it is not guaranteed, and the PC could crash at higher performance demands. Do small changes and test each time.

 

What do you mean with uncore?

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Your temps are extremely high for your hz and vcore, are you using a good thermal paste?

I also have an i7 2600k, I have it since 2011, and in 2015 I bought a Rainjintek Themis, single 120mm cooler, and since then I'm using 4,6ghz @ 1.404v on summer and 4.7ghz @ 1.42v on winter, and even then my temps don't get even close to 74ºC

I tested a similar configuration that you're using and this was the results:

Idle:
1600mhz
Vcore: 1.008v
Temp: 20~24ºC
Fan Speed: 650~700rpm

10 Minutes Stress test:
4413mhz
Vcore: 1.380v
Max Temp: 49ºC
Fan Speed: 1300rpm






The weather in my city says it's 21ºC, so I believe my room is about 21~25ºC

 

Yes of course, I've assembled computer for years as main job .. Two times I've reinstalled the noctua with the thermal premium paste and the radiator getting hot, if I stop the fan in fact it dissipates. In some Intel and other socket I noticed problem on voltage out of the box and crazy high temp even with good cooling solution.. Don't know maybe if fan is not working well according to bios settings.
Case is a Cm haf922 with 20mm fans..

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Yours solution is AIO water cooler? That Temps are related usually to that solution and not to air cooler.
But..you're around 60 degrees on the table list as temperature, not 49.
Also power consumption is around 65W when I reach 95W with stress program. Try Intel burn test V2 at maximum..


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I ve found result of the noctua D14, bit better than my U14s but temp are the same
https://www.google.it/url?sa=t&sour...ggfMAA&usg=AFQjCNHxPge6V9J_RGYfqRVP4fGtBGwh2w

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I don't feel the need to use a more demanding stress test since my temps on games are even lower than on this stress test

I'm not using watercooler, I'm using the Raijintek Themis as I said

 

Just wondering, never heard about that brand

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I also never heard of it before I bought, but as it was the cheapest 120mm I found, I decided to give a try, and loved it

 

After little adjustments now that I hit around 70/73 °C using prime95o and Intel Burn test V2. I've also disabled pll overvoltage, need for heavy overclocking and useless in my case. (around 1.350 Vcore + 0.008v boost sometimes)
Btw I'm asking what's the best way to go:
1) offset + Speedstep (mine)
2) fixed voltage + SpeedStep
3) fixed voltage without SpeedStep (don't know if the fixed cpu freq can help to reduce vcore, due to clock stability without SpeedStep)

Which works better, even for cpu lifespan? Considering pc works 24/7 mostly.

 

Maybe you find some more info over there -> http://www.overclock.net/t/1100100/info-intel-2500k-2600k-overclocking-tips

Undervolting/overclocking my i7 4790k was a real pita - overclocking was much easier back in the old days...