Advise on increasing CPU voltage please

Beena

Beena

Beena

Associate
Joined
4 Jan 2012
Posts
6
Hi all can i ask for some advise on increasing voltage to my CPU on a system supplied to me by Overclockers last week please.




system supplied
System Specification
- Case: Antec 300 Case with Purple LED Fans
- Power Supply: OCZ ZS 650w PSU
- CPU: Intel Core i5 2500K 3.30GHz @ 4.60GHz Sandybridge CPU
- Motherboard: Intel Z68 GEN3 (Socket 1155) DDR3 Motherboard ** B3 REVISION **
- Cooler: OcUK H2 Flo CPU Cooler
- RAM: 8GB DDR3 1600MHz Dual Channel Kit
- Hard Drive: 500GB HDD
- Graphics Card: Choice of DX11 Compatible Graphics Cards
- Sound: Realtek 7.1 Channel Sound (On-Board)
- Optical Drive: LG DVD+/-RW SATA Drive

It also has a 60gb ssd drive supplied
Plus a AtI radeon hd 6950 2048 graphics card
plus win 7 operating system.
.................................................. ............................
I contacted tech support and reported i was getting BSod`s the BSOD`s error code is 000lots ending with 0124

this was occuing first when launching game applications and the heaven test not occuring at the exact same spot sometimes as it just starts sometimes after a period of time and i have had a few occur just with windows running.
The machine runs fine with prime 95 and intel burn test no probs at all and overclocks as it is supposed to. Plus i have noted if i leave prime 95 running its does not seem to go wrong as much.
A chap replied to my webnote from ocuk tech support
saying Sounds like you need to up the CPU voltage a little

Not being an expert i thought i would ask about doing this as i looked in the bios and its set with an OCUK profile which gives you the settings as supplied .
Am i able to to adjust the voltage withought affecting the ocuk profile?
If so how exactly, is it in the bios or is there software on the motherboard cd i can do this in windows.
Also how much do you adjust it by i noticed in the bios its states 1.36 volts
how much do you increase it by and where and is there a safe limit? i must admit to be a bit confused reading the sandybridge thread in the main forum as there seemed to be many contradictory posts on voltage values.
Also is they a point when if the bsod`s still occur one has to say its not cpu voltage thats the problem.
So my question is how would i actually increase the voltage and by how much and will it affect my ocuk profile
Your help would be apreciated in how to do this as i would rather ask an expert than do it by guesswork

many thanks in advance

Sabina
 
Firstly we need to know what motherboard you have.

The change of voltage is really quite simple especially if the motherboard has a UEFI Bios (not the daunting blue screen + white text).

Usually a case of find the 'cpu voltage' or similar and up it a notch or two.

Note: If your on an Asus motherboard, have a memory stick in while your in the BIOS, hit F12 and it will save a screen shot to the memory stick for you to upload. I have a hunch allot of the OCUK Sandybridge bundles came with P8Z68-V boards.
 
Ah nice and simple then, I have the same board just not the Gen3 version.

Press Del. on start up to boot into the bios, then into advanced mode, there should be a tab called something like 'A.I tweaker'

Scroll down until you see CPU Voltage and then there are two boxes to the left, it will either say manual or offset and then something below, could you tell us what those say? Like in this screen I need to know what each box says in it.

cpuvoltage.jpg
 
@pgi isn't 124 error not enough vccio voltage? That's the error code for nehalem chips but is it different for sb?
 
Afaik it is related to vcore/ram voltage with SB.

VCCIO is usually left at auto with all SB overclocks too, so it could be down to that but only if OCUK moved it to a manual voltage for some reason.

This is usually what pops up for 0124: 0x124 = increase/decrease vcore or QPI/VTT
 
On nehalem its 101 error for not enough/too much CPU voltage and 124 for qpi/vtt,you can safely use upto 1.2v for vccio on sb,maybe try 1.10-1.15v?
 
Not sure, anything left on 'auto' on the p8z68 usually over-compensates with voltages so if it is on auto I would have thought it would be fine. - not ruling it out yet though :)
 
Hi i have just looked at the boxes you told me to look at

The top one says

CPU Voltage 1.352 Manual ( in the dark grey box)

CPU Manual Voltage 1.365 ( in text box in red text)

I hope i have got the right ones

many thanks Sabina
 
Yes that sounds about right, what is the overclock set at? afaik they are usually 4.6ghz. If so the voltage if anything looks a shade too high, could you tell me what the 'Load Line Calibration' set as, you'll find that a few boxes up from the cpu voltage.
 
The overclock is set at 4600 as you said

The Load line calibration is set to EXTREME

All settings in the bios are as set from ocuk i have not adjusted anything

many thanks Sabina
 
LLC sounds right too, I don't think you have the greatest of chips tbh, could u post screens of all you're BIOS settings?

In the mean time you could try running at vid, change voltage mode to offset with +/- (either) 0.000.
 
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