i5 4670k overclocking cpu core ratio=multiplier?

[badd]

Hi there!
I want to overclock my i5 4670k, I read that I can do this easily by changing multiplier to 40, so it runs @ 4ghz. But thing is, I cant find multiplier setting on Asus Uefi Bios, atleast I'm not sure about it.. All I can find is CPU Core Ratio, and its options: Auto, Sync All Cores and Per Core.
Is that the same thing as multiplier? I did use google and found many pics, and there is actual multiplier option.
I'm paranoid about breaking my PC and so I want to be sure about this.
Thanks!

 

[clutchc]

Can you provide the make/model of MB?

 

[badd]

Sorry I can't use reply for some reason..
Asus Z87-K Intel Z87 LGA 1150 ATX

 

[clutchc]

Sorry I can't use reply for some reason..
Asus Z87-K Intel Z87 LGA 1150 ATX

Yes, as explained starting in section 2.5.1, you should set AI OC Tuner to manual and then you should be able to adjust the core ratios in CPU Core Ration (2.5.3)

 

[badd]

Sorry I can't use reply for some reason..
Asus Z87-K Intel Z87 LGA 1150 ATX

Yes, as explained starting in section 2.5.1, you should set AI OC Tuner to manual and then you should be able to adjust the core ratios in CPU Core Ration (2.5.3)

Many thanks for pointing out those sections! Last question, if I set my core ratios to 40, what should my Min. Cpu Cache Ratio And Max CPU Cache Ratio be? Should I leave them on Auto or set them to 40 too?

 

[clutchc]

the CPU Cache Ratio is a Haswell-specific thing that I am not fully up on. It appears I'm not the only one. http://hardforum.com/showthread.php?t=1770740
As a result, I'd leave it at auto until more info comes to light. Personally, I prefer to OC via multi and voltage alone if possible. Changing too many parameters w/o hours and hours of painstaking testing to see what effect they have on other functions is too troublesome for me. If you Google 'cpu cache ratio' you'll find opposing viewpoints.

 

[badd]

the CPU Cache Ratio is a Haswell-specific thing that I am not fully up on. It appears I'm not the only one. http://hardforum.com/showthread.php?t=1770740
As a result, I'd leave it at auto until more info comes to light. Personally, I prefer to OC via multi and voltage alone if possible. Changing too many parameters w/o hours and hours of painstaking testing to see what effect they have on other functions is too troublesome for me. If you Google 'cpu cache ratio' you'll find opposing viewpoints.

Alright, thank you for clear answers. I'll go by multiplier only then to 4ghz..