i5 2500k Turbo OC - Struggling to manage Vcore and get good temps

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inneruniverse

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Jan 22, 2015
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Hello. I want to perform a Turbo overclock for my i5 2500k.

The problem I am having is I cannot find any guides for OCing Turbo setting to 4.5GHz. Does anyone have a decent guide for this, or have done it themselves and can walk me through it?

My relevant specs:

CPU: i5 2500k
Cooler: Cooler Master Hyper 212 EVO
Motherboard: GIGABYTE GA-Z68A-D3H-B3
PSU: PC Power & Cooling ZT Series 750 Watt
RAM: G.SKILL Ripjaws Series 8GB (2 x 4GB) Timing 9-9-9-24-2N, Voltage 1.5V

Here are captures of my bios screen at default settings. I went through every menu and submenu:

main: http://i.imgur.com/EqBQYfk.jpg
M.I.T. current status: http://i.imgur.com/9i2E68f.jpg
Advanced Frequency settings: http://i.imgur.com/dcA6LCl.jpg
Advanced CPU core features: http://i.imgur.com/ajUb2Ec.jpg
Advanced Memory settings: http://i.imgur.com/PI4h0mZ.jpg
Advanced Voltage settings: http://i.imgur.com/qi5FM4Z.jpg

Here is what I've tried so far. I will update this as I try more things.

Default setting: http://i.imgur.com/4MfSJvA.png
Noting that CPU Vcore stays in a 1.2 - 1.212V range.

Test 1 - Turbo set to 4.5 GHz for each individual core, everything else remains default: http://i.imgur.com/H1OuxZe.png
Noting that CPU Vcore went up to 1.392V and likely would have gone higher if I ran the p95 longer. CPU Temp 81, CPU Core temps from 81-92.

Upon entering my bios again after test 1 my Vcore changed to 1.404 as can be seen in this screenshot: http://i.imgur.com/UzLKds9.jpg

Where I am currently lost:
I don't understand how to manage what my Vcore is set to.

My temperatures were crazy high on Test 1. The Vcore was also pretty high. Guides I've seen recommend the CPU being set to 1.35V maximum. Currently I don't understand how to control what my CPU Vcore max is. Guides I looked at also said p95 testing temps shouldn't exceed 70C and my individual cores went as high as 92C. Is my cooling inferior or is my Vcore too high? Perhaps both?

edit 1: Instead of jumping to 4.5 using auto vcore, I incremented from the default 3.4 to 3.5. I also set Dynamic Vcore from Auto to 0.00. My understanding was this would prevent my Vcore from changing at all. However, the increment from 3.4 to 3.5 caused my Vcore to rise under 100% load conditions from the default 1.212 to 1.224. Incrementing to 3.6 caused it to raise from 1.224 to 1.260. Shouldn't it be staying at 1.212 if I changed my dynamic Vcore from Auto to 0.00?

Any recommendations on what settings I should try?
 
Solution
U
DVID (Dynamic Vcore) allows you to + or - voltage from stock voltage, you have it set to auto so it can fluctuate freely, set it to +0.00v to begin with and ensure it boots at stock frequency.

From there run some tests make sure stable, personally hate P95 I use CPUID (Stress mode) and Cinebench. Once you have it stable you can begin overclocking, you may need to increase DVID, you may not, luck of the draw on that one and depends on how far you OC.

Alternatively if you are happy with stock settings this should solve your issue(s)... hopefully :)

**Edit** upon reading what you said further that's a peculiar one, try with Load Line Calibration enabled too

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inneruniverse

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Jan 22, 2015
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So after 6 hours of tweaking all the settings, nothing I do lets me control my Vcore. It's completely irrelevant what I say my Dynamic Vcore to, the system seems to just automatically determine what Vcore to use regardless of my input. Not sure if my board is defective or of this board was just not meant to let the user determine their own Vcore.

Anyone have any ideas?
 
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UnivocalPanic

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Feb 15, 2016
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You can set VCore which you don't seem to have done in the picture of your voltage settings, also enable Load Line Calibration.

I personally would disable Turbo boost on the 2500k, would rather manually set OC to 4.5GHz then get it stable, once it is stable you could then re-enable power saving modes to reduce the clock speeds and VCore when idle.
 
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inneruniverse

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Jan 22, 2015
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I don't see where I can set the VCore. The screenshots I shared were of the default settings so anyone who may have come to help could offer a suggestion from the stock settings presented on the motherboard. I tried disabling Turbo and all power saving features and then started ramping up my clock speed .1 at a time. Each increment of .1 my Vcore went up despite me not changing it in the settings. I took Dynamic Vcore off Auto and set it to both normal and +0.00 and neither option prevented it from going up. I also tried Load Line Calibration level 1 and 2 (it only has 2 levels for my mobo) and Vcore was still increasing as I incremented clock speed despite me having Dynamic Vcore set to +0.00.

If I am doing something incorrectly could you elaborate further?
 
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UnivocalPanic

Commendable
Feb 15, 2016
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0
1,520
DVID (Dynamic Vcore) allows you to + or - voltage from stock voltage, you have it set to auto so it can fluctuate freely, set it to +0.00v to begin with and ensure it boots at stock frequency.

From there run some tests make sure stable, personally hate P95 I use CPUID (Stress mode) and Cinebench. Once you have it stable you can begin overclocking, you may need to increase DVID, you may not, luck of the draw on that one and depends on how far you OC.

Alternatively if you are happy with stock settings this should solve your issue(s)... hopefully :)

**Edit** upon reading what you said further that's a peculiar one, try with Load Line Calibration enabled too

 
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