e6600 and 400fsb problems

OpenToSuggestions · 29 Jan 2009 at 13:39

I am trying to get my e6600 to 8x400=3.2ghz, I have upped various voltages and orthos and super pi pass fine.

In games like farcry2 and fallout3 though the game frequently stops responding, as in every few minutes. It does not do this when running at stock.

The ram is always kept below 800mhz and the pc never bsod's.

I have had many attempts in the past at getting 400fsb to work fine on my motherboard, but is there a chance my e6600 just plain cannot do 400fsb?

My sig is the machine in question.

Thanks

mishima · 29 Jan 2009 at 13:52

Have you tried using X9 instead? My old E6600 did 9x389 with no problems at all. Didn't even have to fiddle with volts either. Unlink the RAM and see if the muliplyer works better on X9

OpenToSuggestions · 29 Jan 2009 at 13:55

Just tried 356x9= 3.2ghz and no problems at all. I have the volts at 1.34 or something the heat isn't a problem.

As the motherboard takes ip to 400fsb anyway as standard thought 400fsb might be a bit easier than on my old DS3.
I always set the ram ratio so the ram runs at 800mhz or below, I am sure the ram is no problem here

mishima · 29 Jan 2009 at 13:57

Try small increments now, nudging it up to 365 etc. You can then establish what you need to do!

OpenToSuggestions · 29 Jan 2009 at 13:58

mishima said:
Try small increments now, nudging it up to 365 etc. You can then establish what you need to do!

Was originally just trying for a 400fsb so the ram would run at 800 exactly.

Is there a chance than my chip just doesn't like a 400fsb?
I have had no problems going up to 385ish fsb iirc.

pastymuncher · 29 Jan 2009 at 14:07

Mine ran at 9x400 no problem. I don't think it's the cpu.

Apparently, from what they are saying on the Far Cry2 forums, the game is very sensitive to overclocked systems causing symptoms similar to yours.

OpenToSuggestions · 29 Jan 2009 at 14:31

pastymuncher said:
Mine ran at 9x400 no problem. I don't think it's the cpu.

Apparently, from what they are saying on the Far Cry2 forums, the game is very sensitive to overclocked systems causing symptoms similar to yours.

With 400fsb I couldn't even finish creating a character on fallout3!

SteveB · 29 Jan 2009 at 19:56

What mobo you using? I think my Asus P5B Deluxe with an early BIOS wouldn't do 400 FSB with my E6600. 399 worked fine though, it was like an FSB hole.

OpenToSuggestions · 29 Jan 2009 at 21:53

SteveB said:
What mobo you using? I think my Asus P5B Deluxe with an early BIOS wouldn't do 400 FSB with my E6600. 399 worked fine though, it was like an FSB hole.

Just the bog standard P5Q. It takes 266/333/400fsb processors as standard so assumed 400fsb would be easier to get than on my DS3.

400fsb x 8 = 3.2ghz - passess all stress tests but many new games stop responding very soon into playing.

361fsb x 9 = 3.25ghz - passess all stress tests and games work fine

Wierd!

SteveB · 30 Jan 2009 at 18:04

Perhaps try 400*6 to see if it will reach that. It's worth trying a different version BIOS just to rule that out. Possibley try it in another PC or mobo if you've got access to one. Have you tried increasing Northbridge volts a notch?

memphisto · 30 Jan 2009 at 19:41

well i was about to post the same or similar problems,

my e6600 is sat at 356 * 9 10 hours orthos stable at 1.376V as per CPUID

however using the same voltage or anything up to .05 more i cannot get it stable at 400 * 8 wierdly i know its not my ram thogh as prior to this attempt i was running it at 3:2 with my ram at 890mhz in order to achieve 3.0 GHZ, therefore i have ruled out the ram as the problem due to my prior OCing attempt.

I have a BFG 680Sli and was wondering if upping the northbridge / southbridge would help as it did back in the XP1700 days (which was my last overcloc) however nowadays they dont seem to be called northbridge / southbridge ?

anyone got any suggestions ?

Big.Wayne · 30 Jan 2009 at 20:13

Hey mglover070588,

I may be able to help you out as I've devoted more time than I should to the study of the INTEL LGA775 platform!

I have some ideas and explanations of why you are running into stability problems (especially when gaming) when overclocked and using non native CPU multi's

Before I make a total fool of myself though can I ask you to download and run the IntelBurnTest v1.6

I use pretty much all the stability testing tools but am finding IBT a quick and handy way to identify overclocking issues, especially related to gaming stability!

I am expecting your PC to fail an *maximum* stress (#1) ten loop IBT test, let me know pls! :cool:

Andrew G · 30 Jan 2009 at 20:14

From what I have read on here the 680 SLI is not as especially good when overclocking you will hit the brick wall faster than the Intel based systems.

I have my MSI 680i running 3.2Ghz on aE6600 although this is with unlinked memory which I guess don't count. (I am still reading around the overclocking subject so please be kind if the above isn't to the point, I am still trying to get my head round the, linked unlinked, performance pro's con's).

Locke · 30 Jan 2009 at 20:28

With a couple of motherboards I had, sometimes if you fill up all the RAM slots it reduces the overclocking possibility, try with 2 empty slots if you're using all of them at the moment.

Anyway, my spec does 8 * 400 easily, undervolted 0.1, so don't adjust the voltage yet.

memphisto · 30 Jan 2009 at 21:14

well i couldnt get it stable when i had 2 sticks of geil ULL, I know have 4 though lol so all my ram banks are full

OpenToSuggestions · 31 Jan 2009 at 12:43

Big.Wayne said:
Hey mglover070588,

I may be able to help you out as I've devoted more time than I should to the study of the INTEL LGA775 platform!

I have some ideas and explanations of why you are running into stability problems (especially when gaming) when overclocked and using non native CPU multi's

Before I make a total fool of myself though can I ask you to download and run the IntelBurnTest v1.6

I use pretty much all the stability testing tools but am finding IBT a quick and handy way to identify overclocking issues, especially related to gaming stability!

I am expecting your PC to fail an *maximum* stress (#1) ten loop IBT test, let me know pls!

ok

Have got some project work in on monday but after that I am free for a few days will give it a go then

Are you wanting me to run the max stress 10 times on both the 361fsb and the 400fsb?

Clum · 31 Jan 2009 at 12:50

it's strange that on my system if i set a 9x multi for 3.6ghz then the overclock is not stable at all. setting for a 515mhz fsb and a 7x multi though lets it sit stable as hell.

OpenToSuggestions · 2 Feb 2009 at 19:59

Did a test! Did it at 7x400 = 2.8ghz and it failed Linpack testing on run 3 out of 10.

As always ram is kept at 800mhz or below.

Big.Wayne · 2 Feb 2009 at 20:55

Clum said:
it's strange that on my system if i set a 9x multi for 3.6ghz then the overclock is not stable at all. setting for a 515mhz fsb and a 7x multi though lets it sit stable as hell.

Hey Clum,

that sounds like a miracle to me! Have you got any stability screenshots of that please?, I am even suprised that 7x515MHz boots! . . . the NBCC would be running running at 662MHz! :eek:

mglover070588 said:
Did a test! Did it at 7x400 = 2.8ghz and it failed Linpack testing on run 3 out of 10

Hey mglover070588,

I have reason to believe that running a E6600 at 7x400MHz-FSB puts a tremendous strain on the Northbridge chipset. When you lower a CPU's multiplier from it's default your making the chipset (or NBCC) work harder and you will certainly need to pay attention to chipset volts and settings. You may think that setting a E6600 at 7x400MHz-FSB and 9x400MHz-FSB places the same amount of strain on the Northbridge chipset but it doesn't

If I may suggest you may be better off sticking with the chips default 9x multi for the moment and just gun straight for 3.6GHz (9x400), that would take the strain off the northbridge and put the hurting directly on the CPU!

You will probably need 1.4vCore to 1.5vCore to get 3.6GHz stable, once you have worked out how much juice your chip needs to hit 3.6GHz (if it's even possible!) we will be in a better position to make some FSB adjustments to maximise system bandwidth.

For helping to isolate errors I also suggest you make sure your memory is running synchronously (1:1) with your FSB for the initial CPU testing period! :cool:

OpenToSuggestions · 2 Feb 2009 at 22:59

Big.Wayne said:
I have reason to believe that running a E6600 at 7x400MHz-FSB puts a tremendous strain on the Northbridge chipset. When you lower a CPU's multiplier from it's default your making the chipset (or NBCC) work harder and you will certainly need to pay attention to chipset volts and settings. You may think that setting a E6600 at 7x400MHz-FSB and 9x400MHz-FSB places the same amount of strain on the Northbridge chipset but it doesn't

If I may suggest you may be better off sticking with the chips default 9x multi for the moment and just gun straight for 3.6GHz (9x400), that would take the strain off the northbridge and put the hurting directly on the CPU!

You will probably need 1.4vCore to 1.5vCore to get 3.6GHz stable, once you have worked out how much juice your chip needs to hit 3.6GHz (if it's even possible!) we will be in a better position to make some FSB adjustments to maximise system bandwidth.

For helping to isolate errors I also suggest you make sure your memory is running synchronously (1:1) with your FSB for the initial CPU testing period!

Fallout 3 only occasionally crashes when using 360ish fsb, it always crashes when on 400 fsb (same as farcry2). Should I be upping the northbridge voltages?? All I really want is a 400fsb and yet no matter what multi I use it will crash in these games even though it passes overnight orthos and prime and 3dmark2006.