Hi, i'm new here so Grtz to everyone.

I have bought an E6400 some time ago and I always wanted to overclock it, but i didn't need it at the time.
Time has come since i wan't to run some heavier applications.
This is also the first time i've overclocked anything.

I went out and bought XMS2 PC6400 5-5-5-15 Corsair memory modules
fitted them and went to work.

Without changing the voltage of CPU/RAM/NB/SB i can just reach a FSB of 1220Hz with the memory at 305Hz to keep a 1:1 ratio. beyond that i get a
"cpu or voltage error" message.

now there a people who can reach FSB speed up to +-1400 with stock cooling and without having to change the voltages.

When i change the voltage to medium ranges
CPU: 1.4V
RAM: 2.0V - 2.1V
Northbridge 1.6V
and leave the FSB at 1220 and memory at 305 everything works fine,
so i don't think there is a voltage problem.

Then when I try to go higher on the FSB/memory with steps of 10hz,
at 1230 it fails again.

I don't understand where i'm going wrong.
You guys as well as I have seen Conroe E6400's that go like way beyond what i'm getting.

Does the power supply have a big factor in all this?
I've done a memory test, ran prime95 and everest on the applied settings. and everything looked fine.

I'm new at this so thx for reading when the mistake might be clear to a pro

what mobo?

Can you run 400Mhz memory speed at normal (non-oc) speed ?

Is your northbridge passively cooled? my DS3 gets too hot to touch at 400Mhz without a fan pointing at it...

It is rare that power supply has much effect, even at 3+Ghz its barely at 100W, unless you also have an 8800gtx

It's an Asus P5N32 SLI SE DELUXE with nForce4 chipset (could this be the reason?) The northbridge is passively cooled

non oc, the memory runs at it's full speed without errors.

Might edit first post:
everything is being cooled by 3 x 12 cm fans in an Antec P180
cpu and mobo temperature (at oc speed) are between 29° to 31° idle, and at stressing 51°

I've read the C2D oc tutorial.

But since i can't boot with the default FSB (333mhz) ....

Does anyone done an OC with the nForce4 chipsets and had bad results?
Tomorrow i'll upload a picture with cpuz/orthos/cputemp info. maybe that will help figure out what the problem is.

What also noticed me is that in the BIOS the temperature of the system is much lower than shown in core temp?
I'll try to update to BIOS first.

I need help , I didn't pay money for better memory modules when the cpu increase is only -10%

I have an Abit that its northbridge is passively cooled and pushed all my voltages above that, can't be shure bout the speeds though, but I had no problem with the northbridge overheating.

Set PCIe to 100, PCI to 33.33.

PCIe is at 100, and PCI is not available.

Try to set ram speed in BIOS to [BY SPD] with 1:1 ratio. Leave all voltages at stock and try upping the FSB by 10 from 266. If this doesn't work try using the overclocking settings provided in bios. There is one option (if memory serves me right AI NOS) that lets You overclock dynamically in windows.

oops, nevermind, I thought you said 3.5 but yoy said 2.5, hmmmm

I'm trying to flash the bios to a newer version.
This version should provide better support for 800Mhz memory modules

But the damned Awdflash util is a pain in the ass.
I tried Aflash aswell but i get a "bios hook not available!" error....?
Does anyone know a descent flash util.

What does this mean, the one 1:1 ratio that has to be correct?

the 1:1 ratio is the FSB to mem.

The 'by SPD' setting can be found in the 'chipset' setting with the detailed memory timings (check Your user manual).

Flash the bios from windows using Asus Update. It is a lot easier.

nForce 4 chipsets are not good at overclocking, you may be potentially hitting an fsb wall with that motherboard.

Thx, that did it pretty smoot and easy.
After the Bios update, i was able to pull it up to 2.6

Still i don't know what you mean by SPD settings?
Do you mean changing the latency's of memory modules?

I hope that's not the case otherwise i'm gonna have to invest in another motherboard or cpu. (wich I can't )

I'm gone read the Conroe OC guide again and see what happens.

If my ISP wouldn't be inconveniently unavailable with webspace from time to time, I would have been able to post some pics of my system, because i would like some feedback about stability.

Since i need the processing power and I want to pull it at minimum of 2.8, and forever keep it at that for use of 4 to 5 hours a day, I would not want to ruin the processor.

Are the only two factors you need to watch heat and voltage?
And is it only "good cooling=good stability", or do you need one of the better/best power supply's ?

Yes the SPD setting is in regard to memory timings - do not set them Yourself choose [by SPD] or [AUTO]. That may free up some room for a higher OC.

I am running a e6300 @ 2,8 GHz with an udervolt to 1.29 on a cheap Arctic Cooling Freezer Pro 7 + and haven't experienced any CPU stability issues whatsoever. You should top that easily because I run the fan at just a bit over 1000 RPM (the max is 2500) just to keep it silent.

Keep us posted and good luck

I kept the memory setting at auto which is 5-5-5-15
so setting them by SPD means that they need to be at manufacturer settings?
And by changing to like 4-4-4-12 is overclocking and unstable?

When I applied the settings of de Conroe guide.... :? (it is verry good guide, respect)
at 2.6ghz I set the voltages of the guide, killed everything to releave NB, and started at 5Hz at a time
so from 325 x 8 to 330 x 8, at the new speed it booted, but when i wanted to run Orthos, the moment i clicked "start", everything frooze :? (music was playing, and stopped doing so at the moment, so it was not the explorer)

When I killed the power, and restarted it didn't post at all. (tried several times but still nothing)
I waited for 15 minutes, started up, only able to go in setup, and so I set the voltages back to normal and the fsb to 325.
So it probably was a heat problem....Northbridge?

Everything runs now with idle temps at 41° and load at 47°

I think the nForce4 chipset has got me stuck :?
There is an option to pull the speed of SB and NB from 800Mhz to 1Ghz
Would this do anything?
(I would try allot to get it at better performances but do not want to destroy/damage anything)