Computer continually restarts after overclock

Cowuuube

Cowuuube

Cowuuube

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Joined
13 Jun 2004
Posts
437
Location
Cheshire, UK
Spec is

2500k
2x4gb corsair vengeance
4870
essence stx
antec 650w psu
z67xp-ud3p (i'm fairly sure its rev 1.0)
6 case fans and nh-d14 cooling it all

Yesterday evening I overclocked my CPU to 4.5ghz by following this guide

http://forums.overclockers.co.uk/showthread.php?t=18338090

By selecting 1.33 as the vcore i had a stable overclockng according to Intel Burn. What i noticed though, in cpu-z (i think it was this, maybe it was hwmonitor) it said my vcore was around 1.63 volts (compared to 1.33v in the bios) I was a bit worried about that since it seemed a tad high.

So instead of lowering it by .05 volts each time i knocked it down to 1.15 in bios, assuming cpuz would still record a higher than 1.33v figure. Ran intel burn on high again and it stayed stable.

I left the PC for a couple of hours idling and when I came back, it was continuously starting up and restarting after just 1 second.

I left the computer unplugged for 8 hours and tried it this morning but the problem remains.

Any ideas?

Thanks.
 
CPU-Z is not reading the Vcore, seems more like the memory voltage. Haven't used that board in a long time but i know on many of my Z68 Gigabyte builds the VTT is being read as the vcore in cpu-z. Would use easytune to find out the real vcore which is probably what you set it to, you're likely seriously undervolting the cpu for 4.5Ghz @ 1.15v.
 
Without going into too much detail, try setting your vcore to auto, and make sure the offset is set to "-", not "+". Roundabout -0.060 is (I think) what mine is set to.

This should at least get you back to stability for the time being...
For now, reset your CMOS to go back to the stock default settings and try again!
 
what llc level are you using? that applies a chunk of voltage to whatever you set your fixed voltage to,so try a lower level llc

you cant use offset(dvid) and llc together on gigabyte z68,its one or the other
 
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