i5-2500k OC Issue

[c0dec]

Hi, got my i5 and P8P67 Pro yesterday and set on getting a few more mhz from it but ive hit abit of a brick wall, the system posts but Windows fails to load. I wondered if you could suggest anything, details below:

System
Mobo: Asus P8P67 Pro running 1003
CPU: i5 2500k batch L040B544
Ram: 4Gb Crucial DDR3 1333mhz

OC Settings
Bus: 100mhz
Multi: x45
CPU Voltage: 1.38V
CPU PLL: 1.8125V
VCCIO: 1.2V
VCCSA: 1.35V
Memory: 1.5V
PCH Voltage: Auto
Load-Line Calibration: High
VRM Frequency: Auto
Phase Control: Extreme
Duty Cycle: T.Probe
Enhanced SpeedStep Technology: Enable
Turbo Boost enabled: Enable
CPU Spread Spectrum: Disable

I was originally looking to hit 4.9Ghz but im unable to hit anything over 4.3Ghz at present, even 4.5Ghz would be nice!

 

[Vipernet]

whats your psu?

Disable speedstep and turbo boost and try again.

 

[c0dec]

PSU: Tagan 800w

The overclock is applied via Turbo boost though so I cannot disable that without disabling the whole overclock!

 

[Stormar]

just follow this guide..http://www.bit-tech.net/hardware/cpus/2011/01/07/how-to-overclock-the-intel-core-i5-2500k/3

 

[c0dec]

just follow this guide..http://www.bit-tech.net/hardware/cpus/2011/01/07/how-to-overclock-the-intel-core-i5-2500k/3

Yeah mate, thats basically the settings above

 

[nlel1975]

You need to update to the BETA BIOS 1053 and enable PLL overvolt then Windows will load... I had the same thing

 

[c0dec]

You need to update to the BETA BIOS 1053 and enable PLL overvolt then Windows will load... I had the same thing

Thank you sir

 

[c0dec]

Just updated and enabled PLL overvolt but the same happens I can boot on 4.4Ghz @ 1.35v without an issue, soon as I change to 4.5Ghz, it constantly get stuck on the Windows loading screen

 

[Stormar]

there is now a newer version bios out that should sort your problems..

http://forums.overclockers.co.uk/showthread.php?t=18232154

 

[rustEswan]

Right for a start - leave speedstep and turbo enabled, its far easier to get a good clock of these cpu's using the turbo function imo. And speedstep will save £s on your electric bill.

Turn your Duty Cycle from T.Probe to Extreme, update the Bios to 1053 and put you're LLC on low if you can.

You may very well just be unlucky and have a thirsty chip, or more likely, the asus board/bios sucks when it comes to memory support/stability. Which is exactly why my asus is sat next to me back in its box.

 

[c0dec]

The board is fine, has been proven to take chips much further than I have taken mine, im gunna try this newer beta bios and hope for the best tomorrow!

 

[powned]

And speedstep will save £s on your electric bill.

over how many decades? it costs bugger all to run a computer electric-wise.

 

[c0dec]

Im now using Bios 1253 and currently running prime 95 on 4.8Ghz @ 1.38v Hitting 70c max @ 22c room temp, so im happy with that. I may move up to 4.9Ghz but don't really wanna put over 1.4v though my chip.

 

[rustEswan]

over how many decades? it costs bugger all to run a computer electric-wise.

Ok minor exageration.... but tell that to the folding brigade....

 

[Stormar]

told you that new bios would sort your problem out 1253 bios update has sorted a lot of problems and there is another coming out soon,but if you want the full updates to what asus suggest including the itel driver etc then you can get it here.

http://www.hardforum.com/showthread.php?t=1578865

 

[c0dec]

told you that new bios would sort your problem out 1253 bios update has sorted a lot of problems and there is another coming out soon,but if you want the full updates to what asus suggest including the itel driver etc then you can get it here.

http://www.hardforum.com/showthread.php?t=1578865

Very helpful, thanks a lot

 

[Stormar]

your welcome,i suggest you make that link a fav,so you can keep checking the updates that asus guy posts.