P67/Z68 BIOS Guide - BASIC~Intermediate Overclocking

[stupidolive]

thanks Raja. I used manual and stopped with + 0.04. But under full load to prime95, vcore is 1.304-1.31 and it's lower than when - AUTO.
so I suppose i'll continue to test - seems that AUTO under Subtract can still overadding voltage?

[AzO]

From what I understand so far up to this point is:

CPU Voltage -> Manual = static voltage

CPU Voltage -> Offset = variable voltage depending on load

Please correct me if I'm wrong.

[Phoenixz]

Hello,

first of all, thanks for the amazing guide, I have so many questions =/... but, the actual one is about the cpu current capability:

"CPU Current Capability: Increases the power threshold before over-current protection limits power (either by shut-off or throttling). We set this to 140% for all overclocking (processor cooling permitting)."

When do I need to change it (when/why)?

At the moment I have my setup overclocked to 4.6ghz @ 1.38v, using 100% on the Cpu Current Capability, even if I change to 140% I cant get it stable @ 1.375v

(to test stability Im using IBT 30 cicles at MAX, Linx 25 cycles at MAX and 12h of Prime 95% of the memory)

My config is:
Asus Sabertooth P67, bios version 2103
I7 2600k
2x4gb Corsair Vengeance 1600mhz 9-9-9-24-2t
AX850W psu


My other questions are (I don't even know where to start!, I m really new to this "overclocking wolrd" and Im lost in it... I have read every single guide / tutorial I could found about the bios freatures, but all I see is the numbers I should be using and not why do I need to change it (of course the main ones I understood, i hope ) :

When (why) do I need to change the VCCIO from auto?
Using IBT to test staibility is overkill? (I can run prime / linx at 4.6ghz @ 1.37 stable, but I can only get it to run IBT at 1.38v)


Anyway, thanks again, and Im sorry for the english mistakes, its not my native language

[sdrutz]

Hi all,

I have a P8Z68-V Pro Gen 3 MotherBoard without a bios field for the vccsa. I suppose the reason is that the voltage is the same as for the vccio.
I keep the system @default and such value (vccio/vccsa) set to AUTO, I saw that the result is 1.05V (more or less).
Nonetheless, intel specs state the maximum value for vccsa is seriously less than 1.05.

Is this a lack of asus MB or I didn't understand Intel's specs?
Do I need to wait for a new BIOS version?

Thanks a lot in advance
regards

[shall1976]

I'm trying to OC my i2500k and P67Z68 Pro Gen 3 but my CPU multiplier simply will not go above 41.

I am able to raise my BCKCLK to 105.6 fully stable (gives me roughly 4.3 GHz) but I cannot lower it to 100 and raise the multiplier to 42 and up. When I set it to manual and go into the field I press the + key but it stops at 41.

Am I doing something wrong? How to I get it to continue rising?

Thanks all,

[Raja@ASUS]

Update to latest UEFI. Load defaults, then enter the multiplier that you want manually using the numerical keys.

-Raja

[garikfox]

sdrutz: 1.05v is the VCCIO voltage, the VCCSA voltage reads .925, These two are typical/normal voltages according to Intel specs.

[ethoen]

Great thread. Helped me get a stable 4.8ghz 1.36v overclock.

I'm without a graphics card at the moment, but still playing some games using the 2500k igpu.

I have overclocked it to 1450mhz with adjusting igpu voltage, igpu LLC or igpu current capacity.

Does anyone know where I can monitor igpu voltage? What the max/recommended igpu voltage is? What, if any, guides are available for igpu overclocking? How much of an overclock is achievable.