E6600 P5W DH Help Break the FSB Wall

[updawg]

CPU:E6600 Retail on P5W DH
Bios:1101
FSB: 370x9 3333MHZ
Mem Volt: 2.15
Vmch: 1.65
Vcore: 1.55
Hyperpath: Disabled
Cooling: H20 (CPU Block: Storm Rad: BIPGT240 Pump: D5)

Everything else set to auto, dual prime stable.

---------------------------------------------
Problem: I can boot up at 400x9 but can not get it stable for the life of me(I can run SPI but not orthos), I've bumped the vcore all the way up to 1.6 with no luck, any suggestions?

[rick_fx]

What motherboard are you using?

[updawg]

Sorry the title says it if you missed it by chance, it is the P5W DH.

[rick_fx]

OOps, I see it now. :)

I have the exact same problem as you (see sig). At 1.55V, max fsb I can get dual prime stable is 371fsb, but at 372fsb, it's totally unstable (can't even complete SPI 1M)

I'm starting to think it's the board, because I've tried just about everything possible ...

[John600rr]

Same exact problem here.

[updawg]

Another question, can you change your ram timings? If I try to change any of the speeds I can't even boot bios - even if the times are laxed completely! How about you?

[Mykou]

Maybe you now need Vmch mod ..or increase Vcore

Mine has 0.03 Vdroop

[rick_fx]

Yes, that doesn't seem to be causing me problems. Have you tried disabling "DRAM throttling"?

[rpg711]

or vfsb vmod... or vnb vmod, or just do all of them for kicks

[rick_fx]

Maybe you now need Vmch mod ..

Isn't 1.65V Vmch enough for 370fsb? Other reach abound 430fsb with that much Vmch :)

[Mykou]

Isn't 1.65V enough for 370fsb? Other reach abound 430fsb with that much Vmch :)

yeah , but nobody's perfect so aren't mobos as well... ;)

Beyond 1.65 V air cooling I can't imagine what temp you get on both cores :slobber:

mines are 66/67 ° under 14h17 min priming right now

In France we suffered so may deaths by wheather overheat in 2003 shall we have the same for core 2 duo hmm ...:p:

[updawg]

I was waiting for Fugger's guide before I attempted the mods as I can't afford to break my board. I'll try disable DRAM Throttling and mess around with the timings, any other suggestions keep them coming!

[rick_fx]

yeah , but nobody's perfect so aren't mobos as well... ;)

Beyond 1.65 V air cooling I can't imagine what temp you get on both cores :slobber:


Only 1.55V Vcore, 1.65V for Vmch ;)

[rick_fx]

I was waiting for Fugger's guide before I attempted the mods as I can't afford to break my board. I'll try disable DRAM Throttling and mess around with the timings, any other suggestions keep them coming!

Here's how to do the pencil mods on p5w-dh, guide by the master himself, Shimano: http://vr-zone.com/?i=3876&s=1

[lawrywild]

erm what?

you bump 300mhz with a .05v increase in vcore and you expect it to stay stable?

ROFL

[updawg]

Thanks for the link - I might attempt it in the "near" future.

However back to my ram timings question, I disabled dram throttling and then set my timings to 6-6-6-18 and still no boot, any help here?

Sorry I'm not an "overclocker" know-it-all but I am just trying and am asking for help, I didn't want to run my vcore over 1.55 volts because overusage at the volt isn't safe. I can boot up at 400 fsb with 1.55 so I was unsure of how much increase it would take to get it dual prime stable.

[rick_fx]

Thanks for the link - I might attempt it in the "near" future.

I can boot up at 400 fsb with 1.55 so I was unsure of how much increase it would take to get it dual prime stable.

Strange, I can't even boot with 373fsb ...

[lawrywild]

Thanks for the link - I might attempt it in the "near" future.

However back to my ram timings question, I disabled dram throttling and then set my timings to 6-6-6-18 and still no boot, any help here?

Sorry I'm not an "overclocker" know-it-all but I am just trying and am asking for help, I didn't want to run my vcore over 1.55 volts because overusage at the volt isn't safe. I can boot up at 400 fsb with 1.55 so I was unsure of how much increase it would take to get it dual prime stable.

ok

well cas 6 doesn't work on this mobo so no point trying that..

To get from boot stable to prime stable, well that's probably .1v-.15v so 1.65v maybe 1.7v..

[updawg]

Thanks for the input!

Okay I downloaded memtest86 and I was getting errors like crazy, I'm new to all this I'm using ocz pc-6400 platinum xtc, what do I do test 1 module at a time now? Do I contact ocz for an RMA? please help.

[epox4life]

my board wont allow any changing or ram timings eather if I do it just doesnt post at all.

[Mykou]

Strange, I can't even boot with 373fsb ...

This mobo is very strange lol :confused:

I could boot w/o any pb at 375 fsb (375 x 10 )1.48v bios with DDR 800@1050 4-4-3-12 :banana: :banana:

all benchable and stable but not prime :p: and did not go further to get it stable with 26° ambiant ....:rolleyes:

[rick_fx]

This mobo is very strange lol :confused:

I could boot w/o any pb at 375 fsb (375 x 10 )1.48v bios with DDR 800@1050 4-4-3-12 :banana: :banana:

all benchable and stable but not prime :p: and did not go further to get it stable with 26° ambiant ....:rolleyes:

I know, it's a weird mobo. Probably a feature Asus integrates in their mobo's now :p:

Anyway, I'm thinking of trying out the MSI 975X Platinum V.2, this p5w-dh is giving me too much trouble.

[Brahmzy]

Funny,
These are VERY similar to the walls I was hitting with my DS3 & retail E6600.
1.45V @ 3.2GHz rock solid
1.5V @ 3.3GHz rock solid
1.6V @ 3.4GHz almost rock solid.

My P5W DH gets here tomorrow. So, basically I paid an extra $100 for the same results? Great.

I'd give my left nut to have 3.4GHz be stable @ <1.6V.

[M.Beier]

Try using divider 4:3 CPU:RAM, then you kinda' black out the posibility of it being ram...
Also, you need close too 1.6v in order to get that CPU stable at 400*9, and thereby you need some POWERFULL AIR COOLING - or better..

EDIT:
For the record... VMCH varies ALOT on these boards... Mine was 1.72v when I put 1.65v in bios, imagine if thats 1.58v, now that could be an issues when it comes too hitting high FSB... - I've got my board modded and can easily give as much as I like... I can inform you that the board really clocks well with high VMCH, I've passed 500FSB with 2.0V

[Lestat]

can i suggest buying a 40mm fan, pealing off that copper shield over the NB heatsink. and putting the fan on the heatsink.
the copper shield over the NB doesnt do anything, its only for looks. its only held on by sticky tape. so...

also try auto vmch fsb and such.
mine was totally stable at 400mhz fsb but i had to take small leaps to get there.
also 400mhz is 3.6ghz.
on a retail 6600 your gunna need somthing around 1.6v to do that.
sorry but close to 1.6v is kinda the norm from what i'm seeing.
lucky me to have my ES and 3.6ghz @ 1.33v and 4g at >1.55v :)

anywho that last stretch to 3.6ghz is a pain in the arse for retail chips.
they really suck compared to the ES chips for overclocking.
but ther eis a spot where you have to take a big leap in vcore.
try it and see what happens.

on my DH i never needed to touch the vmch or vfsb or any of that. just vcore and vdimm.
also set the PCI-E freq for 100, or 105 or 110. do not leave it on auto.