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Q6600 & EP45-UD3P - 3.4Ghz OC Problems

  • Windows Vista
  • Overclocking
Last response: in Overclocking
April 19, 2009 11:22:58 PM

So this is my first OC and I was doing great up till i tried for 3.4 GHz (i know I just might not be able to do it)...

Here's my situation:

1.36250v - Failed Boot
1.37500v - Failed Boot
1.40000v - Failed Boot
1.41250v - Boot
- P95: Cores 3&4 (C2&C3) instantly fail
1.42500v - Boot
- P95: BSOD
Retry - P95: Core 3 instantly failed, then STOP 0x0000124

Then I went back to 3.2Ghz stable and I had a Vista Boot Error (STOP 0x0000218 - Registry File Failure, System could not Load Hive)
I "repaired" Vista (I will reinstall Vista; I plan on dual-booting x64 and x32 when I get a new hard drive)

I went through some more posts and couldn't find anything obviously simple... so I went into the BIOS and loaded my default 3.4GHz profile with everything set to auto.

PC Health shows:
VCore @ 1.428v
DDR18V @ 1.888v

Before I drop back into this venture, am I at the point where I should be looking at MCH and ICH or RAM..

I just want to make sure I have a course of action before I start.

*Should I be getting BSOD errors like this:
- IRQL_Not_Less_or_Equal
- STOP 0x...124
- STOP 0x...A
- System Registry File Failure


More about : q6600 ep45 ud3p 4ghz problems

a c 198 K Overclocking
April 20, 2009 2:37:51 PM

Need full system specs.

Is your RAM running at the manufacturer's suggested voltage? Check the website.

In the meantime:

HOWTO: Overclock C2Q (Quads) and C2D (Duals) - Guide v1.6.1

Core 2 Quad and Duo Temperature Guide

The ds3l guide is for the P35 board, but there cannot be much difference.
April 20, 2009 7:02:30 PM


Antec 650W Power Supply
- crossfire certifired
Intel Core2Quad Q6600
- G0 stepping
Gigabyte GA-EP45-UD3P
- rev 1.0
G.Skill DDR2 800 (4 x 2GB)
- 1.8v to 2.0v (off the box)
Sapphire Radeon 4850 512
- standard clock
CoolMaster HyperZ 600R CPU Cooler
Acer X223WBD 22' Widescreen LCD Monitor

Windows Vista x64 Business
- I having been experiencing random issues from hardware failure to drive signing issues
- I have disabled UAC, driver signing, and security

I have read most of these guides, but thanks..

I guess I just wanted to make sure that consistantly losing core 3 is normal (!?!) and that these errors (specifically that Page File Error) are common and should be expected.... I've run my RAM through MEMTest, but only for about 8hrs....
Related resources
a c 198 K Overclocking
April 21, 2009 4:26:15 PM

What is your chip's VID?
May 4, 2009 2:26:20 AM

Sorry for the delay, finals suck....

I was forced to switch over to Vista Business 32-bit... I'm stable @ 3.20GHz

CoreTemp VID: 1.3125v

At the moment I am stable @ 3.2Ghz with 1.392v (AUTO setting in BIOS)... but I will find my lower limit @ 3.2 this weekend... then I want to push to 3.4....

I did lock my RAM @ 1:1, 5-5-5-15, and 800... I ran memtest for 12hr with no errors...

any general suggestions for my Mobo??