Voltage 3.4 Northwood ????

[markost]

Can't get above 245 FSB using Mach 11 GT.
CPU core is -27 C.
have been using 1.675Volts on Abit IC7 with OCZ PC3200 rev2.
Have loosened timings to 2.5,3,3,6.

Runs stable at 242FSB with ram at 2.3.3.5. and cpu @ 1.675V

Anyone have ideas?

[bubblethumper]

In my experience, it's quite possible that your mobo is maxed out. My Max3 and my P4C800-E both max out at exactly 260fsb (in stock form). The Max2 and earlier versions of the IC7 generally had lower fsb limits.

Also, that voltage you're running is pretty low. If your cpu is currently maxed out (and not fsb), then some more volts might help stabilize at higher clocks. That said, some people argue that you can kill a northwood with volts over 1.7v. I know people that run them at 2 volts 24/7 for months at a time. Personally, I've run mine at 1.9v for a few days without any issues.

My 3.4C D1 goes 4.4ghz all day long, but I use more voltage than you. i can go as high as 4.6 using dividers, but the performance decreases with dividers. Hopefully this coming week I'll have my Max3 back from modding and get some stable 1:1 clocks above 4.4ghz.

Hope this all helps. I'm sorta giving you a brain dump on my 3.4C experience on phase change because there seems to be a small number of people running this cpu on phase.

[markost]

Thanks mate

My Max 3 is coming back next week as well after the voltage mods.

have noticed that lowering to 232 FSB and running the street racer/strengthened combination performs much faster and benches better than running 242 and pat on auto.

[ibby]

i doubt its the mobo .
ive had an ic7 and a max 3 which have been both able to get
past 284 1:1


try running 5:4 memory divider ....

i know when i had the 3.4 northwood it maxed out at
3.915 gig, with 1.6/1.65v ...
it was no go after that
(air cooling).

Since u have phase cooling... 1.7> 1.8 is what u should look at.

[bubblethumper]

i doubt its the mobo .
ive had an ic7 and a max 3 which have been both able to get
past 284 1:1


try running 5:4 memory divider ....


The 1:1 FSB limit on the IC7 series varies depending on revision. You got lucky.

As far as a divider is concerned, they degrade performance so much that it's not worth it.

[ibby]

my ic7 max 3 is an very early board.
which ive had for nearly 2 years now.

5:4 is not to bad
but the 3:2 is a killer.

[simonk]

Yes, but can he align a cartridge?

[ibby]

Yes, but can he align a cartridge?


:confused:

[Tibu]

Yes, but can he align a cartridge?

:confused: :slap:

[RoyaL]

In my experience, it's quite possible that your mobo is maxed out. My Max3 and my P4C800-E both max out at exactly 260fsb (in stock form). The Max2 and earlier versions of the IC7 generally had lower fsb limits.

Also, that voltage you're running is pretty low. If your cpu is currently maxed out (and not fsb), then some more volts might help stabilize at higher clocks. That said, some people argue that you can kill a northwood with volts over 1.7v. I know people that run them at 2 volts 24/7 for months at a time. Personally, I've run mine at 1.9v for a few days without any issues.

My 3.4C D1 goes 4.4ghz all day long, but I use more voltage than you. i can go as high as 4.6 using dividers, but the performance decreases with dividers. Hopefully this coming week I'll have my Max3 back from modding and get some stable 1:1 clocks above 4.4ghz.

Hope this all helps. I'm sorta giving you a brain dump on my 3.4C experience on phase change because there seems to be a small number of people running this cpu on phase.


i think u are definitely wrong about asus board . my p4c800-e is maxed out over 300fsb in stock form..313.. proved with my (already dead) 2.4ghz D1

anyway here is my 3.4ghz on liquid cooling..soon i'll prove it under prommy..

[markost]

Got my max 3 back today from RMA.
let you guys know tomorrow on the results.

[crotale]

Be sure to disable the last two settings under advanced chipset settings.
You could also try 5:4 or 3:2 to exclude memory from the equation.

I haven't been so lucky with the GAT settings on my IC7, the only thing it did to me was decrease the clocks.
I recommend starting with Auto-Auto-Auto-Disabled-Disabled

[markost]

well guys

Installed the RMA'd Max 3 and won't even reach 240.
voltages are still all over the place and ABIT in Aus don't want to know about it.

goodbye ABIT :mad: :mad: :mad: :mad:

Hello DFI :) :confused:

[crotale]

Have you tried measure the voltages with a Multi Meter?

[s0ck]

Got any other tips for the MAX3? My 2.8m0 seems to max out @ 3.5 under my mach2 (1.7v, dual prime stable) :o
This board has been pants from day 1.

[RoyaL]

abit's max 3 is still the fastest main on 478 IMO
i had 4 asus p4p&p4c and after that i switched to max 3..what can i say, if u need insane fsb u gotta get asus but with a cpu like 3.4 u'll never get 300*17 if you don't go ln2 or stuff like that :) and of course you gotta have an EXTREMELY lucky cpu :D

[bubblethumper]

if u need insane fsb u gotta get asus

I've got some bad luck then. On all my s478 processors, they get unstable right at 260fsb (1:1) on both my P4C800-E (Rev. 2) and my P4C800 Deluxe

And of course my Max3 also maxes out at 260fsb with all 3 s478 processors I've got.

Damn 260fsb wall!!!!

[dragonhunter]

On all my s478 processors I've got.

Damn 260fsb wall!!!!

Me too, gone through 3.2C, 3.2E, 3.2EE, 3.4EE :(. I don't if it's the Mobo or what???
If I switch to DFI, you guys think I can break 270fsb?

[calcal]

lol ic7 max out @ 245..........HAHAHAH

sorry buddy your chip is maxed out, northwoods dont overclock well


dont use street racer and all that stuff it, it limits overclock

[bubblethumper]

Me too, gone through 3.2C, 3.2E, 3.2EE, 3.4EE :(. I don't if it's the Mobo or what???
If I switch to DFI, you guys think I can break 270fsb?

I've still got all my processors and mobos. I wont sell the ones I don't need until I get everything sorted.

You should get your Max3 modded. I'm getting mine modded and the guy doing it is going to guarantee 310fsb capability. If I remember correctly, to get the FSB up, you've gotta do the vAGP and vNorthbridge mods. There are other mods that this guy is doing, but those two are the two big ones.

I'll post back here when I get my Max3 back (hopefully before the weekend) and how it went on the 3.4C (to stay on topic :D )

[RoyaL]

my 2 cent..
get a cheap cpu like 2.4ghz D1 ..i had one of this babies and it used to work over 290 fsb
of course u need to modd the mainboard if u try to reach CRAZY overclocks
we are talking about architectural limit of the cpu, NW clocking over 4500mhz..

[markost]

Bubblethumper.

I'm waiting in anticipation.

[Gamer]

lol ic7 max out @ 245..........HAHAHAH

sorry buddy your chip is maxed out, northwoods dont overclock well


dont use street racer and all that stuff it, it limits overclock

duh :
http://users.pandora.be/gamer/Bh5-BH6/4600.JPG
max screenshot with Prometeia (old bugger, still works fine after 3 years).

unmodded P4C800 Deluxe (first board in Belgium).
worked fine for over a year.

[enzoR]

his ram is TCCD right? intel hates that try 5:4 divider

[calcal]

not all chips are made equal, some overclocke better than others

yours is definetly a good one, my 3.0 max out at 255fsb, my friend also had a 3.0c maxed out at 220 fsb on a p4c800