Overclocking Pentium 4

#1 (**permalink**) 04-22-2007, 03:59 AM

Hello,

I am overclocking my Northwood P4 2.4GHz, to 2.7 GHz. I would like to get
more out of it. I have the core voltage to 1.525V. I also have the memory
to asynchronous 375, voltage to automatic. Do you know if I can go higher?
I am worried about trying a voltage higher than 1.525. I do not mind
pushing the system to the upper limits. My motherboard is an Asus P4PE.
Thanks for any info you can give me.

Talal Itani

#2 (**permalink**) 04-22-2007, 04:53 AM

Talal Itani wrote:
> Hello,
>
> I am overclocking my Northwood P4 2.4GHz, to 2.7 GHz. I would like to get
> more out of it. I have the core voltage to 1.525V. I also have the memory
> to asynchronous 375, voltage to automatic. Do you know if I can go higher?
> I am worried about trying a voltage higher than 1.525. I do not mind
> pushing the system to the upper limits. My motherboard is an Asus P4PE.
> Thanks for any info you can give me.
>
> Talal Itani
>
>

If you look up Absolute Max for a Northwood, it is listed here as 1.75V.
Northwoods suffer from Sudden Death Syndrome, which is why you should
avoid voltages higher than that. Since an Asus board might overvolt about
0.05 at low load, that means a setting of 1.70 is about as high as you
should go. There is a thread here that talks about it:

http://www.abxzone.com/forums/coolin...r-cooling.html

Look for the word "Absolute" here to find the voltage limit:

ftp://download.intel.com/design/Pent...s/29864312.pdf

In terms of overclocking, this site used to be a good one for providing
data. After the site was redesigned, the amount of data available is
quite small (many records were thrown away). For your processor, you'd
be looking for "Pentium 4 533 Bus 2.4b".

http://www.cpudatabase.com/index.cfm?Action=search

Some of the entries in the table don't make a lot of sense, and this
one seems reasonable. They made it to a little over 3GHz, using 1.62 volts.

666 3060 1.62 666 Malaysia 8 ASUS P4PE Pentagram QVC 80 AlCu 13698

According to this, leaving the PCI/AGP setting at [Auto] should be best:

http://www.abxzone.com/forums/intel-...ed-report.html

The idea is to keep the PCI bus frequency below 37.5MHz.

By proceeding in small frequency steps, you should be able to determine
the shape of the Vcore versus frequency curve. At some point, you may
see a "wall", where increasing Vcore is not helping, at which point
you can stop, and back off a bit.

Paul

#3 (**permalink**) 04-22-2007, 05:45 AM

'Talal Itani' wrote:
| I am overclocking my Northwood P4 2.4GHz, to 2.7 GHz. I would like to get
| more out of it. I have the core voltage to 1.525V. I also have the
memory
| to asynchronous 375, voltage to automatic. Do you know if I can go
higher?
| I am worried about trying a voltage higher than 1.525. I do not mind
| pushing the system to the upper limits. My motherboard is an Asus P4PE.
| Thanks for any info you can give me.
_____

Overclocking a Pentium 4 2.4 GHz Northwood 400 MHz FSB to 3.2 GHz is fairly
easy. I have a Pentium 4 2.6 GHz Northwood 400 MHz FSB system overclocked
to 3.2 GHz with a small CPU core voltage increase. The system has RDRAM
PC800 and the memory cannot overclock past a 123 MHz clock. The CPU itself
will overclock further, but the gain is not worth setting the CPU clock :
memory clock ratio below 1:1.

What are your temperatures? And what do you use as the stress test? You
probably need a CPU temperature of less than 55 C under heavy CPU
utilization to get above 3.0 GHz with a P4 2.4 GHz Northwood.

Phil Weldon

"Talal Itani" <titani@verizon.net> wrote in message
news:BcAWh.641$A72.434@trnddc07...
| Hello,
|
| I am overclocking my Northwood P4 2.4GHz, to 2.7 GHz. I would like to get
| more out of it. I have the core voltage to 1.525V. I also have the
memory
| to asynchronous 375, voltage to automatic. Do you know if I can go
higher?
| I am worried about trying a voltage higher than 1.525. I do not mind
| pushing the system to the upper limits. My motherboard is an Asus P4PE.
| Thanks for any info you can give me.
|
| Talal Itani
|
|

#4 (**permalink**) 04-22-2007, 01:18 PM

Thank you Very Much!

"Paul" <nospam@needed.com> wrote in message news:f0em90$j4$1@aioe.org...
> Talal Itani wrote:
>> Hello,
>>
>> I am overclocking my Northwood P4 2.4GHz, to 2.7 GHz. I would like to
>> get more out of it. I have the core voltage to 1.525V. I also have the
>> memory to asynchronous 375, voltage to automatic. Do you know if I can
>> go higher? I am worried about trying a voltage higher than 1.525. I do
>> not mind pushing the system to the upper limits. My motherboard is an
>> Asus P4PE. Thanks for any info you can give me.
>>
>> Talal Itani
>
> If you look up Absolute Max for a Northwood, it is listed here as 1.75V.
> Northwoods suffer from Sudden Death Syndrome, which is why you should
> avoid voltages higher than that. Since an Asus board might overvolt about
> 0.05 at low load, that means a setting of 1.70 is about as high as you
> should go. There is a thread here that talks about it:
>
> http://www.abxzone.com/forums/coolin...r-cooling.html
>
> Look for the word "Absolute" here to find the voltage limit:
>
> ftp://download.intel.com/design/Pent...s/29864312.pdf
>
> In terms of overclocking, this site used to be a good one for providing
> data. After the site was redesigned, the amount of data available is
> quite small (many records were thrown away). For your processor, you'd
> be looking for "Pentium 4 533 Bus 2.4b".
>
> http://www.cpudatabase.com/index.cfm?Action=search
>
> Some of the entries in the table don't make a lot of sense, and this
> one seems reasonable. They made it to a little over 3GHz, using 1.62
> volts.
>
> 666 3060 1.62 666 Malaysia 8 ASUS P4PE Pentagram QVC 80 AlCu
> 13698
>
> According to this, leaving the PCI/AGP setting at [Auto] should be best:
>
> http://www.abxzone.com/forums/intel-...ed-report.html
>
> The idea is to keep the PCI bus frequency below 37.5MHz.
>
> By proceeding in small frequency steps, you should be able to determine
> the shape of the Vcore versus frequency curve. At some point, you may
> see a "wall", where increasing Vcore is not helping, at which point
> you can stop, and back off a bit.
>
> Paul

#5 (**permalink**) 04-22-2007, 01:48 PM

"Phil Weldon" <not.disclosed@example.com> wrote in message
news:uLBWh.3933$j63.35@newsread2.news.pas.earthlin k.net...
> 'Talal Itani' wrote:
> | I am overclocking my Northwood P4 2.4GHz, to 2.7 GHz. I would like to
> get
> | more out of it. I have the core voltage to 1.525V. I also have the
> memory
> | to asynchronous 375, voltage to automatic. Do you know if I can go
> higher?
> | I am worried about trying a voltage higher than 1.525. I do not mind
> | pushing the system to the upper limits. My motherboard is an Asus P4PE.
> | Thanks for any info you can give me.
> _____
>
> Overclocking a Pentium 4 2.4 GHz Northwood 400 MHz FSB to 3.2 GHz is
> fairly
> easy. I have a Pentium 4 2.6 GHz Northwood 400 MHz FSB system overclocked
> to 3.2 GHz with a small CPU core voltage increase. The system has RDRAM
> PC800 and the memory cannot overclock past a 123 MHz clock. The CPU
> itself
> will overclock further, but the gain is not worth setting the CPU clock :
> memory clock ratio below 1:1.
>
> What are your temperatures? And what do you use as the stress test? You
> probably need a CPU temperature of less than 55 C under heavy CPU
> utilization to get above 3.0 GHz with a P4 2.4 GHz Northwood.
>
> Phil Weldon
>

At heavy processing load, and at 2.7 GHz, I am getting a temperature reading
of 58 degrees. My voltage is set to 1.525 Volts, yet the reading fluctuates
between 1.52 and 1.6, and I do not understand why the fluctuation. I used
BurInTest to loading the CPU, for about 10 minutes, and I used Everest to
get the readings. I do not have a fancy fan, just the Intel fan that came
with the CPU.

#6 (**permalink**) 04-22-2007, 03:58 PM

'Talal Itani' wrote:
| At heavy processing load, and at 2.7 GHz, I am getting a temperature
reading
| of 58 degrees. My voltage is set to 1.525 Volts, yet the reading
fluctuates
| between 1.52 and 1.6, and I do not understand why the fluctuation. I used
| BurInTest to loading the CPU, for about 10 minutes, and I used Everest to
| get the readings. I do not have a fancy fan, just the Intel fan that came
| with the CPU.
|
_____

What is the room ambient temperature? What is the system temperature? What
is the temperature of the air entering the heatsink fan? I got my overclock
with the boxed retail Intel supplied heatsink/fan, though I did replace the
Intel supplied thermal compound with a simple zinc oxide in ester base
thermal grease.

Phil Weldon

"Talal Itani" <titani@verizon.net> wrote in message
news:yQIWh.4957$Fs6.210@trnddc03...
|
| "Phil Weldon" <not.disclosed@example.com> wrote in message
| news:uLBWh.3933$j63.35@newsread2.news.pas.earthlin k.net...
| > 'Talal Itani' wrote:
| > | I am overclocking my Northwood P4 2.4GHz, to 2.7 GHz. I would like to
| > get
| > | more out of it. I have the core voltage to 1.525V. I also have the
| > memory
| > | to asynchronous 375, voltage to automatic. Do you know if I can go
| > higher?
| > | I am worried about trying a voltage higher than 1.525. I do not mind
| > | pushing the system to the upper limits. My motherboard is an Asus
P4PE.
| > | Thanks for any info you can give me.
| > _____
| >
| > Overclocking a Pentium 4 2.4 GHz Northwood 400 MHz FSB to 3.2 GHz is
| > fairly
| > easy. I have a Pentium 4 2.6 GHz Northwood 400 MHz FSB system
overclocked
| > to 3.2 GHz with a small CPU core voltage increase. The system has RDRAM
| > PC800 and the memory cannot overclock past a 123 MHz clock. The CPU
| > itself
| > will overclock further, but the gain is not worth setting the CPU clock
:
| > memory clock ratio below 1:1.
| >
| > What are your temperatures? And what do you use as the stress test?
You
| > probably need a CPU temperature of less than 55 C under heavy CPU
| > utilization to get above 3.0 GHz with a P4 2.4 GHz Northwood.
| >
| > Phil Weldon
| >
|
| At heavy processing load, and at 2.7 GHz, I am getting a temperature
reading
| of 58 degrees. My voltage is set to 1.525 Volts, yet the reading
fluctuates
| between 1.52 and 1.6, and I do not understand why the fluctuation. I used
| BurInTest to loading the CPU, for about 10 minutes, and I used Everest to
| get the readings. I do not have a fancy fan, just the Intel fan that came
| with the CPU.
|
|

#7 (**permalink**) 04-23-2007, 09:10 AM

Talal Itani wrote:
>
> I am overclocking my Northwood P4 2.4GHz, to 2.7 GHz. I would like to get

No need to overclock that puppy...

--
http://www.bootdisk.com/

#8 (**permalink**) 04-23-2007, 03:58 PM