Cant seem to overclock my E6600

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I cant seem to get my E6600 to overclock even increasing by as little as 1Mhz, the system just fails POST and resets to the default value.

Ive tried setting the CPU voltage control to 1.35v, RAM voltage to 2.1v and SPD to 2.0 with no luck. What am I doing wrong?

I want to set it to 400Mhz with a multiplier of 7 for the time being to see how hot/stable it runs.
 
I tried with the following settings:

CPU voltage: 1.4
FSB: 267Mhz (1Mhz higher)
Multiplier: 9
Memory SPD: 2.0 (1:1)
MCH: +0.1

And I still cant get the system to boot even with a 1Mhz increase. The strange thing is that if i underclock the CPU by 1Mhz it also wont boot either, basically it doesn’t allow me to change the FSB in any way ...I can underclock by reducing the multiplier. Unfortunately I can’t increase the multiplier as 9 is the maximum.

If I use Gigabyte C.I.A2 dynamic overclocking, it boots and runs fine until it overclocks itself under load ...then it bluescreens complaining about memory.
 
Tried flashing to F6 BIOS (was F4 before) and loaded defaults, now if I change ANYTHING in the BIOS from those defaults the computer resets itself after a few seconds over and over forever without even getting past the POST. I have to physically reset the CMOS on the motherboard to get it to boot. In fact even entering the BIOS and saving settings without changing anything causes this. Also if I leave the BIOS alone and boot into windows ...my onboard LAN doesn’t work.

Ive gone back to the original BIOS now and all works as it did before, but I still cant raise or lower the FSB by any amount.

Do you think the board could be faulty?
 
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Whats the volts on the RAM? I've had builds before that were unstable as hell until the RAM was properly dialled in manually.
 
Whats the volts on the RAM? I've had builds before that were unstable as hell until the RAM was properly dialled in manually.

Tried with default (1.8v) and reccomended by Corsair (2.1v) all with no luck.

Just got off phone to Gigabyte tech support, they said I should RMA it.
 
RMA’ed motherboard after advice from Gigabyte themselves, installed new board of same make and model, still have the problem.

The strange thing is that I can use dynamic overclocking to automatically overclock the CPU when under load, which providing I set the memory multiplier to 2, runs perfectly stable with the FSB over 300Mhz. Yet if I set the FSB to 300Mhz manually it resets itself. Despite setting all voltages to what others have been successful with for the same board and CPU.
 
have u tryed the memory timings ? maybe they too tight and just have a fit when u speed things up ??

Also is the RAM and CPU spankingly new ??
 
have u tryed the memory timings ? maybe they too tight and just have a fit when u speed things up ??

Initially the timings were 5-5-5-18, but I set them to 4-4-4-12 as this was what the RAM was advertised as. But even as 5-5-5-18 it wont overclock.

Also is the RAM and CPU spankingly new ??

Both brand new, and the RAM is listed on a very short list of tested RAM for my motherboard.
 
Just seen your sig, ah ha. Corsair. I've had two lots of Corsair memory that was fussy as hell to get running, now I'm sure a lot of people will contest that and say I was unlucky but I've never found it particularly forgiving to configure properly.

e.g Dial it in exactly on one reboot, unstable. Restart again, stable. Had that happen on two different mobos and types of module.

The last lot I had was DDR500 stuff that had to be spot on. 2-3-3-6-1T @ 500mhz worked absolutely spot on. However, getting to that was a bit hit and miss. Stick with it.

Have you tried this with just 2gb to get it stable, or has it always been 4gb?
 
if the ram is the corsair xms2 c4, ive got the same try running the memory as close too 800mhz as you can (even going lower im running at 710mhz) but still upping the fsb, my xms2 doesnt like anything higher then defualt speed ddr2 800 at 4-4-4-4-12, anything higher even with looser timings isnt stable...
 
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