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i7 2700K & Asus Maximus IV Extreme-Z

post #1 of 13
Thread Starter 
Hi guys,

I am trying to get most out of these components :

i7 2700K w/ Silver Arrow SB-E Extreme
Asus Maximus IV Extreme-Z w/ latest bios
Samsung Green 30nm 2x4GB
Windows 8
Corsair AX1200

Thing I don't understand is ... that things go well till 46x multiplier.

I can get 4.6Ghz (100x46) @ 1.365V stable, but after that ... I mean 47x100 even 1.42V isn't enough to get it stable it starts freezing or just crashing etc.

Few hours ago I got idea, try to play with BCLK a bit and now I'am at 4.8Ghz (46x104.4) @ 1.41V at it's Prime Blend 6.5GB stable so far.

Is this normal ? I did OC already few 2600Ks and never touched BCLK at all, but at this one it looks like it refuses to work with any multiplier over 46.

Any response would be appreciated, thx in advance guys.
post #2 of 13
That was my experience, too, both with a 2500K and a 2700K with the board in the signature (not exactly the same one you have, but close). 4.6GHz was easy, but anything higher was when the 124s started.

What RAM do you have on the board, and how many sticks (how many slots populated)? Have you tried updating the board's BIOS?

Are you using manual or offset for setting Vcore?
post #3 of 13
Thread Starter 
Manual voltage and as for RAM its 2x4GB , currently running at 2230Mhz 11-11-11-30 T1 . I'am quite happy now if it stay stable.

BIOS is latest 3606 for win7 and win8.
Edited by Flisker_new - 1/13/13 at 11:48am
post #4 of 13
Quote:
Originally Posted by Flisker_new View Post

2230Mhz 11-11-11-30 T1

Jeez, I should be asking you for help. smile.gif

What BSOD(s) are you getting?
post #5 of 13
Thread Starter 
Well, "problem" with win8 is that it doesn't say BSODs it just says something like "unexpected error" maybe after restart there is some info but I didn't check it : ( . It was mainly just freezing instead of BSODing .

Anyway I'll try some hard stability test tomorrow and let you know how does this BCLK OCing worked for me.

Btw what is your oc on that 2700k now ?
post #6 of 13
Quote:
Originally Posted by Flisker_new View Post

Well, "problem" with win8 is that it doesn't say BSODs it just says something like "unexpected error" maybe after restart there is some info but I didn't check it : ( . It was mainly just freezing instead of BSODing .

Anyway I'll try some hard stability test tomorrow and let you know how does this BCLK OCing worked for me.

Btw what is your oc on that 2700k now ?

Have you tried returning your memory to stock settings -- are you certain that isn't the source of the instability? That's kind of a weird speed to be running at, but I guess if you're overclocking it you could pretty much end up with anything. Mabye roll back to 2133 and see how it holds up there, repeating the steps that lead to the crash to see if there's any difference in behavior.

I'm currently at 4.8GHz (48 x 100) -- I just passed 24 hours Prime95 stable with it this morning.
post #7 of 13
Thread Starter 
I tried all cpu OCing with memory on 1600Mhz @11-11-11-30 T1, Just now when I started trying BCLK I set memory to 2133 and with changed BCLK I got to 2230Mhz.

And what is your voltage ? BIOS/CPU-Z
post #8 of 13
During the stress testing it varied between 1.376V and 1.384V about 99% of the time -- there were rare moments of 1.368V and 1.392V appearing here and there, and the 1.368s were scaring me because I'm thinking "oh, crap, here comes the blue screen", but it hung on. I have offset set to -0.020, and left BCLK at 100; it makes the math easier. smile.gif

Have you tried bumping VCCIO a little?
post #9 of 13
I have mine at 4.6 stable. Never did any manual setting or even tried over the 4.6
post #10 of 13
I have mine at 4.6 stable. Never did any manual setting or even tried over the 4.6
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