E6600 Overclock

[Bungral]

Hiya,

I'm just in the process of overclocking my cpu and am currently at 3.6ghz using 8 x 450 to reach 1800mhz. I've overclocked my ram up to 450mhz to give me the effective 1800mhz to run at a ratio of 1:1.

Ram is PC26400 and seems to be going ok. I've just ran SuperPi to 32m. Whats a decent timing for this?

The timings on the ram at the mo are crazy loose so next step is to see if I can tighten them a wee bit.

What I want to ask is whether its better to have tighter timings with a lower cpu clock speed or higher cpu clock with loose timings?

Also is there a major difference between 1T and 2T.

I have orthos, prime95 and superpi as well as 3dmark06.. Is there any other stress tests I should use? How long should I run the double test in orthos for before I consider the setup stable?

Any help appreciated.

Edit: Ok it did Pi 32m in 17 mins something and did the orthos cpu test running both cores 100% at 62 degrees with 1.5v but hit blue screen of death when I ran orthos ram and cpu so i've scaled it back to 8 x 425 = 1700 = 3.4ghz.. Been running the orthos cpu test for 17 mins now and sticking it 61 degrees.. Think I might lower the V's a tiny bit. As for the ram I still haven't got to that yet.

If I can get 3.4ghz perfectly stable with some ok timings i'll be happy I think.

 

[Bungral]

Also wouldn't mind some input for this?

Check the clock speeds? Why are two programs showing different speeds to the other two?

The correct settings are as above 8 x 425

 

[FarFarAway]

3400 is the right one as shown by CPU-z

1.5v is a little on the high side for air tbh and the temps whilst in the acceptable limit are a tad high

 

[Bungral]

posted twice by accident.. can't see how to delete posts :noobsign:

 

[Bungral]

3400 is the right one as shown by CPU-z

1.5v is a little on the high side for air tbh and the temps whilst in the acceptable limit are a tad high

Yup 3400 is the right one.. Had it running at 3600 a second ago and was fine running pi to 32m but bit of orthos killed it.

running prime95 affinity one on each core at the mo with temps at 53 degrees 100% load and haven't even changed the v's yet.. very odd.. also running orthos memory test at the same time and seems pretty stable.

1.5v is probably a lil high but this mobo has massive vdroop when under load. I suppose 1.4v with the 0.100v allowance thing set to auto would be better??

Do you think its better to have the 1:1 ratio and the lower multiplier than sticking with the multiplier at 9?

My timings are at 5-6-6-31-25 at the mo according to CPUZ with the mobo set to auto.. gonna try 5-5-5-15-22 me thinks. Its at 2T.

EDIT:

Ok so now i've lowered the Vcore to 1.45 with the 0.100v set to auto to allow for the Vdroop that seems to knock the voltage down to 1.27 every so often for about a second. This has resulted in temps sitting at 56 degrees max when running Prime95 in affinity mode on each cpu for 15 mins.

Also tightened the timings to 5-5-5-15 and all seems to be fine. Ran the Orthos RAM test on it for a 10 mins and no instant errors.

Happy with how it is for now.. Will maybe try to lower timings more when I have a bit more time to kill

 

[Ham]

Dam i just got your email dude...

Ill post up all my bios configs and what they do for you when i got a spare min

 

[Bungral]

Ta muchly

 

[Mr. Smith]

Why are you using 8 as your multi and not 9?

Good work so far

 

[Bungral]

Why are you using 8 as your multi and not 9?

Good work so far

Let me get my ratio to 1:1 with my ram which I read some of the E6600's seemed to like.

Am I totally wrong?

I know I had it at 3.6ghz and the cpu was happy enough with the multi at 8 but when I tortured the RAM it wasn't that pleased. I should have loosed the timings and tried again but I probably don't have the cooling for 3.6ghz anyway.

 

[Ham]

Righy ho.

First off. Few things about this board, at least mine. It under volts HORRIBLELY. i mean by like .1v. Which is a bit shocking tbh. So we set an upper limit of 1.5 on the vcore normaly. So this can go up too about 1.55 in the bios without worrying too much (temp allowing obviously).

The vdroop mod is pretty essential. Google P5N-E SLI v-droop mod. 6B pencil & 100kohms did me the best.

North bridge heat sink must be replaced *think you did that* and have more that sufficient airflow over it.

Bios:

First up you need too jump into the Advanced->Jumper free config.

Disable SLI memory.

System clocks: pci-e bus should be 100.

Volatage. I run at 1.45, 2.25, 1.3, Auto.

Fsb is what you tweek

back to the advance menu

CPU functions: Disable eeeevvvvrrrrrryyyything, set your multi too whatever you want.

On board: Dissable everything you dont need. Leave the subs form there alone.

USB stuff (cant remember option name): enable all

Chipset: urm, ill get back too you on that.

All i can remember off the top of my head, ill have a better delve and take some pics later.

Please remember these are what works best for my setup and my need tweeking for yours. Also any damage done by following this is your fault

 

[Bungral]

I think i've got most of that covered. I've also slapped the memory into slots 2 and 4 as i've heard 1 and 3 are not very good.

I'll lower my NB voltage as I currently have it on 1.5ish but its got that thermalright lump on it so its only at about 38 degrees or something.

Yeah if you have anything else it would be handy.. Just so I know

I really should do that vdroop mod but I don't know that I can be bothered. What do you mean 100 ohms did you the best?

 

[Ham]

Too start with the resistor that you pencil mod is 133kohms. VR zone recommend about 77kohms, but when i dropped it that low i my idle voltage started too rise and it had little extra effect on the vdroop.

 

[Bungral]

So you mean which resister to actually pencil on. Well i'll just follow that guide you gave me? Is that the correct one? Or is that what your telling me that it isn't?

As for lowering my NB voltage.. Really didn't work for me. I did a totally fresh install of Vista tonight as wanted to have it all nice and clean now i've finished messing about with it (mostly) so once it was all installed I lowered the voltage and forgot about it and couldn't make out why it wouldn't start suddenly. Finally remembered and bumbed it back up to the 1.52 or whatever it is and it booted fine. Think i'm just gonna get the 70mm fan and put it on my thermaltake for peace of mind.

 

[Bungral]

Ham, I tested my vdroop with a multimeter earlier tonight and found that idle it was at 1.48 and at 100% in prime95 both cores it only drooped down to 1.42... With that sort of droop i'm not sure its worth me messing about with it.