I have to say going in that overclocking this motherboard and CPU combination is about as easy as it can get. The 2600K CPU is an amazing piece of hardware, and the P67 FTW is certainly a great board to pair up with it. I'll update this post with further results as I get the clocks higher, but I will start with a 4.8Ghz overclock and explain how I got there.
 
I began by reading Jacobs guide which is a must read for the first timer, if nothing else it gets you pointed in the right direction. When I first began to overclock this combo I set the vCore to the suggested 1.3v but quickly realized that amount of voltage was not necessary for early testing. Heck, I was able to get to 4.0Ghz on stock voltage! The current 4.8Ghz overclock has still not warranted a CPU Voltage above 1.3v as set in BIOS. The voltage does climb a bit higher under stress testing because of the "Without Vdroop" setting I use, but the highest I have seen registered is 1.317.
 
Here is how I set the BIOS up for the 4.8Ghz clock.
Main Overclocking Screen

• CPU Multiplier = 48
• Vdroop = Without
• Internal PLL Voltage Overide = Enabled
• CPU Vcore = 1.30v
• Dimm Voltage = As per Manufacturers Specs, in my case 1.5v

CPU Advance Configure Sub Menu

• EIST = Disabled
• C1E Support = Disabled
• CPU C3 Report = Disabled
• Turbo Mode = Enabled

Memory Configure Sub Menu

• Memory Multiplier = As per your memory's speed rating, in my case 1866
• Speed Profile Select = Custom Profile
• I always set the following parameters manually and let BIOS's auto detection set the rest. Make sure and set as per manufacturers specs for your memory. Also make sure you enter each channel and set the values as described. If you do not set the values for each channel you risk the possibility of having them be different which will cause all sorts of stability problems.
  
  1. tCL
  2. tRP
  3. tRCD
  4. tRAS
  5. tRFC Command Rate

I ran a 20 pass run of LinX to ensure stability, here is that screen shot. I used E-Leet to bump the BCLK setting just a tad so CPU-z would read a CPU speed of 4.8Ghz.

 
Either later tonight or tomorrow I'll be trying 5.0Ghz and higher, it'll be interesting to see how far this setup will go.  Stay tuned!

your max temps look good. shoot for 5.0 then check this thread for the 5.0+ clubhttp://www.evga.com/forums/fb.ashx?m=1068719.
 
nice work

Thanks bud, probably be tomorrow before I can devote an hour to running LinX again, I like doing 20 passes for peace of mind.
 
Thanks for the link, I'll be sure and participate when I get that far!

Ok, so I had a little time to devote to another 20 pass run of LinX, this time at 4.9Ghz. I tried first with the vCore still set to 1300 (1.30v) and LinX failed after 16 passes.  I entered BIOS and gave the vCore a minimal boost to 1315 (1.315v) and LinX was able to complete the 20 passes.

 
It'll probably be tomorrow before I'll have time again to try the next step, which will be the coveted 5.0Ghz mark!

I found LinX doesn't stress Sandy Bridge like Prime95 does unless you run the AVX version. LinX normal will pass a lot of crazy overclocks for me but it isn't full stable.
 
AVX is core of SB and will put it to the test for stability:
http://gigaflopd.com/downloads/linx/
 
Edit: Nevermind. Looks like you're using AVX version due to the high Gflops.

Thanks Blizzie, I thought I had missed something.....LOL.  I did go ahead and download the version you linked to and I'll use it when I do the 5.0Ghz runs.
Thanks!

Sorry it has taken me so long to update this thread, but real life has a way of taking priority.....LOL.
 
Anyway, the latest attempt was at 5.0Ghz and I managed to get there! I had to raise the CPU voltage to 1.350 this time around as well as the VCCIO up to 1.10v and it flew right through 20 passes of LinX.
 

 
Here is a quick run of SuperPI 1M at 5.0 Ghz.

 
As usual I'll try for more when time permits!

So, first I will say I'm a "long time watcher (or troller I guess), first time poster".  I've wondered on forums for a while and I recently decided to take the plunge into overclocking.  Out of the many forums I looked into, you Mr. lvcoyote, seems to be the coolest person and make the most sense (no knock on other posters).  Your previous posts even helped me with a couple of problems I've had already.
 
All the props aside, I have the same mobo/cpu combo as you (and millions of others I'm sure), but I don't wanna just straight copy your voltage setting and whatnot to get my overclocking on par... I wanna know what the hell I'm doing.  You mentioned on your first post about "Jacob's guide" pointing a beginner like me in the right direction... anyway you can do me one and link me to it?  I've roamed around and did research on prime95, linx, and other factors but I wanna make sure to get sucess like you did I'd at least know what all the changes I'm doing means.
 
Thanks for your patience in advanced, and sorry if my jumping right to this post is violating any beginner stuff I'm supposed to be doing first.  And of course, if anyone else has the link for me to follow, any help pointing in the right direction will be worshiped.  I've exhausted myself on google searches and I'm ready to dig in...
 
-Rick

Thank you for the kind words, here is the link to the overclocking guide, it's a sticky at the top of this forum section.
http://www.evga.com/forums/tm.aspx?m=1033200

Oh, drat... now I feel bad when I could of just looked at the top of the forums... my bad.  Thanks a lot.
 
-Rick
 
Now that I'm looking, I guess I better get to work on my bottom signature to follow the standard.  hehehe...

Could i use these settings as a guid for my z68 board??

counterfistmatt


Could i use these settings as a guid for my z68 board??

As a reference point, yes.

counterfistmatt


Could i use these settings as a guid for my z68 board??

Don't be discouraged if you are having trouble hitting the same frequency at the same voltage as LVcoyote.  Every cpu is different and requires its own settings.  Start with Jacob's OC guide stickied at the top and slowly work your way up.  It should also be mentioned that a good number of 2600k's top out at 4.8 (although it is usually just a vCore issue where it needs more voltage but then your temps start to get out of control).
 
Best of luck to all you OC'ers and good job on the write up LVcoyote.

Simply can't wait for your next update :). Let's see when you reach the 5,5Ghz :D (You will, you will)

Been so darn busy lately, but I'll get back to it when I can.

I hope that to be soon! I mean you're awesome!
 
p.d: I'm almost on my 100red post!

Nice write up

looks great, i may try for higher multi as well. im running 1.3v, but with the evga superclock cooler and the avx linx running my max temps hit 80 degrees.

Come on 4 months since your last update. We need more updates, update, UPDAAATE PLEASE!!  :P

LOL, just don't have the time right now.....sorry guys.... at least I got to 5.0Ghz before stopping......LOL.  I'll get back to it as soon as I can! But heck, X79 is out now, people may be more interested on how that stuff works now days!

Not till they stay "stable" on the market and become the new standard... 
 
Come on I want to see a new update next week. I know you can. I know we matter you...

LOL... I'll see what I can do..... maybe over the Thanksgiving weekend I can find some time.....

We should do something on that day in your honor for all you're doing for our community :)

Your voltages seem low for that overclock. I was using Prime95 to test and at 4.8ghz I couldn't remain stable until I was at 1.4v. Its been a while since I did CPU overclocking so maybe I'll do some more tests to see if I can get the voltage down more.