ya..i did checked it twice...its enabled and auto...but still the monitor reads the frequency as 3.50Ghz..its just happen after i make a OC test on it...

update : didn't try using fatal1ty board as oredy success boot to windows with higher multi (52)
enable Cstate setting> no limit

what is the max safe Vcore. just wanna try how high this 2700K ES chip can go with safe voltage.
end up with setup in WC casing 
very lazy to change the waterblock at first but when i saw the temp i was like 
pretty low (40'C) compare to previous air cool (61'C)

Just a quick Intel noob question since I just couldn't find anything related to what I want to know.

Can a locked SB use faster memory divider? For example i5-2400, can it be run at faster memory speed, or is the memory divider also locked? I know running faster memory speed barely does anything to improve performance, just asking though.

Hi Sifus,

Am facing a weird scenario here. OC-ed my proc to 4.0GHz with vcore of 1.150V. While running prime95 for awhile, everything looks good and temp max at 60c. But after that, I saw a big increase of temp until 85c and vcore at 1.360V. Kinda worried on the sudden increase of vcore and temp. Is this cause by the CPU LLC? I have the CPU LLC on level 2. Or any other possible cause?

Below is my specs:

i5 2500K @ 4.0GHz at 1.150V
Asrock z77 Extreme4
Seasonic S12MII 620W
2x4GB Corsair Vengeance 1333 RAM

From what I read, Asrock's LLC works the opposite way from the other mobo makers where level 5 nets you the least voltage compensation and level 1 the most. So, you're suggesting to lower down the LLC (Asrock's case, up the level)? Oh, forgot to mention that my temp and voltage only shoots up after the 7th hour of priming. That's why I feel it's a bit weird since for the 1st 7 hours, there is no voltage increase.

As for my cooler, I have 212 Evo with push pull fans.

can anyone tell me guide to overclock ?

I'm very very new to water cooling.
I don't OC in the past, and since I recently got hook up to WC I tell myself why not try how far I can go.

Purpose : Other than benchmarking / showing off, I do 3D rendering a lot (Interior Designer here)

Ok, cut the crap short.

My water cooling setup is as below

RASA 750 RX240X KIT | EX240 RADIATOR
SCYTHE GENTLE TYPHOON x 4 | XSPC TUBING
ENZOTECH COMPRESSION FITTINGS | RAYSTORM CPU & GPU WATERBLOCK

Loop design :
In my room I have air-con set to 21c - 24c

Result, which I think it's the max I can go.
1.46v @ 4.8ghz (passed 1 hour Prime95 small FFT.

Will do a 24 hour test after getting advice here.

Photos :

Okay, so here's the problem.
1.) I think I either got a bad chip or something is wrong with my loop.
My CPU idle @ around 37-40 (PLEASE CONSIDER MY AMBIENT TEMP)
When it's full load on 4.8ghz @ 1.46v it goes up to 70c - 80c

Can anyone of you help me identify the problem? Or that's the max I can go with the radiator I'm having now. (I'm still new so I tell myself to upgrade slowly in the future)

Another question is, why do core #0 get so much lower temp than the other 3, around 10c lower if you notice in the picture provided.

I will appreciate your input here!

Full specs on my sig!

Hmm, so regarding the idle temp it's pretty normal for my WC setup?
Only fan? I have both typhoon pushing air out.
Using 1,48 to achieve 4.8 consider a bad chip or not?

Sigh, I've seen people getting to 4.8 with much lower voltage in OCN.

I'm actually pretty new to this OCing and WCing thing.

I think you can see my loop design from the picture above,
airflow I think should be ok-good. Since cable are well managed by Cyntrix, exhaust fan at the back of casing (stock from CM Storm Trooper)
Both rad using push style.
I'm thinking of upgrading to 360 or 480 as you suggested, but did some google and 480 require modding of the case and I don't think I'm capable of doing it.
Took a peek from the top and I see there's a little bit space left to put fan for push-pull.

Anyway your 2600k still available?

Haiya    no luck
Anyway, I lowered my core speed to 4.7ghz with 1.43v getting temp MAX 78 after 40min of prime small fft.
Should I stick to this or lower more for 24/7 usage?
It's still an improvement over the high voltage and >80 temp previously @ 4.8

<1.4 Can only hit 4.6ghz
Kinda disappointing as this is my first WC rig and didn't even hit good result. Probably a bad chip I guess, the chip is very power hungry. Anything below 1.3 won't even load pass bios.

Now trying 1.37 @ 4.6ghz, temp stays around 65. If everything is stable might as well just stick with it and wish for better luck of winning the lottery of golden chips in the future.
It's pretty crazy this chip need additional of 0.6v to move 100mhz more.

Yeah, I guess that's the case.
Anyway, does a SB degrade over high voltage or high temp? Or both? and how much improvement will I see if I upgrade my pump to MCP-355 from rx240kit stock pump?
Looking forward to learn a lot from you man, initially just wanted to get a rig from Cyntrix, let him OC for me to the max and learn how to maintain the WC system just for the sake of look.
After getting the rig not more than 1 day already gatal to play around with OCing and benchmarking. Well I guess I'm more to a 'learn how to fish' than a 'give me a bucket of fish'  

can someone teach me how to overclock my CPU 
can teach me step by step ?
thank you !

im using almost the same spec as him, but my PSU is gigabyte powerock 500w, now im using 4.0ghz, but my vcore still set it as auto.

Guys...i need help here...my 2700k need high vcore in order to make it stable when prime...i bought 2700k because thought it are the binned 2600k which can overclock pretty well..
currently i had run 12hour prime @4.5ghz/1.34vcore in BIOS..
when i try to oc 4.6ghz/1.36vcore it BSOD...
can any sifu guide me to overclock this chip..

ohh..my bad..if i know this thing earlier i will buy 2600k instead..just try prime 4.8 @ 1.4vcore..BSOD 101..    

BSOD also..just pass 10 minute prime blend..