Topic on Overclocking P4P800 SE

hochoi · TweakNOOB Joined: 22 Jun 2003 Posts: 212 Location: auburn

Hi all,

I am trying to learn to OC my P4P800SE. I think it's better to discuss this in a seperated topic.

What I have been able to do so far is to set

FSB to 210 which makes my 3.0Ghz P4 work at 3.23Ghz

DDR Voltage to be 2.85v

Lock AGP/PCI at 66/33Mhz

Set DDR frequency at 400Mhz.

There are still many parameters about the memory I have touched yet before I hear from the experts. Please help me :)

DRAM Refresh Rate? I see Auto, 7.8 uSec, 15.6 uSec, 64 uSec, 64T

DRAM CAS# Latency? I see 2, 2.5, 3.

DRAM RAS# Precharge? I see 2, 3, 4.

DRAM RAS# to CAS# Relay? I see 2, 3, 4.

DRAM Precharge Delay? 5, 6, 7, 8.

DRAM Burst Length? I see 4, 8.

DRAM Idle Timer? I see Auto, 0T, 8T, 16T, 64T.
_________________
ASUS P4P800 SE
3.0 Ghz Overclocking to 3.39 Ghz. (225Ghz)
Temp: Idle: 40F, Fan: 2600RPM, Max: 53F :)

Know little, learn slowly but still happy :)

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ToggleHead · TWEAKGURU Joined: 03 Mar 2004 Posts: 4360 Location: Jersey

As a start, loosen your ram timings to 3-4-4-8. Intels like these timings.

Then start your OC. 210 is a good jump so far. If you can boot into wondows, check for stability (as noted in other threads). If not...push it a little higher to see if you just found a bad spot. Keeping your RAM at 400, push the FSB up in 5mhz increments until you cant post or boot.....then back down one by one till you can.....then check for stability.....

If not stable....try setting your RAM to 333 before adjusting FSB, and check again.

I have the same chip....and mine runs stable at 3.75 (250 FSB), 3.67 (245 FSB), and 3.45 (230 FSB).

Well...at least those ive checked....and my RAM isnt great....
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2old2care · Posted: Thu Sep 07, 2006 2:06 pm Post subject:

First off download this memtest86 iso . It'll make a bootable cd with memtest on it. So you can check your stability without going into the OS.

You know your chip will OC pretty well so what you are trying to do is increase your memory bandwidth. I would start by setting your memory voltage down to 2.8V.
Then set it so your DDR freq = your FSB. Loosen the memory timings up all the way, 3-4-4-8 like TH said. Then work the FSB up 5MHz at a time, each time going into memtest and running it a while for errors.

And reread some older posts in this section, they might help.
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Liquid-Cooled Q9450 and an EeePC
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hochoi · TweakNOOB Joined: 22 Jun 2003 Posts: 212 Location: auburn

Thank both ToggleHead & 2old2care. As your suggestions, I should set

FSB to 210 which makes my 3.0Ghz P4 work at 3.23Ghz

DDR Voltage to be 2.85v (or 2.75v) (Do not see 2.8!!!)

Lock AGP/PCI at 66/33Mhz

Set DDR frequency at 400Mhz.

DRAM Refresh Rate? I see Auto, 7.8 uSec, 15.6 uSec, 64 uSec, 64T

DRAM CAS# Latency? <<<<<3

DRAM RAS# Precharge? <<<<<<<<<4.

DRAM RAS# to CAS# Relay?<<<<<4.

DRAM Precharge Delay? <<<<<8.

DRAM Burst Length? I see 4, 8. ???????

DRAM Idle Timer? I see Auto, 0T, 8T, 16T, 64T.??????

How is about DRAM Burst Length? and DRAM Idle Timer?

This next question is for , what is the temp. you have when you OC to 3.75?
_________________
ASUS P4P800 SE
3.0 Ghz Overclocking to 3.39 Ghz. (225Ghz)
Temp: Idle: 40F, Fan: 2600RPM, Max: 53F :)

Know little, learn slowly but still happy :)

ToggleHead · TWEAKGURU Joined: 03 Mar 2004 Posts: 4360 Location: Jersey

my temps are fine with a serious air cooler on there. i never go above 45 at load.....but i have an sp-94 with a 92mm high CFM fan.

What kind of cooling setup do you have? Im assuming its just Air cooling right?

If its the Stock intel fan setup....i fear you will need to upgrade to get any serious performance at safe temps.....
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hochoi · TweakNOOB Joined: 22 Jun 2003 Posts: 212 Location: auburn

You are right. I have only normal airflow. It is too much for me if I upgrade the air cooling system :).

There are two other parameters I do not know how to set them up (asked in previous message). Please help me if you can.

Thanks a lot.
_________________
ASUS P4P800 SE
3.0 Ghz Overclocking to 3.39 Ghz. (225Ghz)
Temp: Idle: 40F, Fan: 2600RPM, Max: 53F :)

Know little, learn slowly but still happy :)

hochoi · TweakNOOB Joined: 22 Jun 2003 Posts: 212 Location: auburn

I can only go up to 225Mhz

_________________
ASUS P4P800 SE
3.0 Ghz Overclocking to 3.39 Ghz. (225Ghz)
Temp: Idle: 40F, Fan: 2600RPM, Max: 53F :)

Know little, learn slowly but still happy :)

fussnfeathers · Lord of the Tweak Joined: 14 Dec 2004 Posts: 2763

Normal airflow being..........stock cooler, and how many case fans? How neat is your wiring? What brand/model of case, PSU, RAM......all of this can affect your OC speed.

For example, your mobo might not be all that stable at higher than rated FSB, your RAM might not OC well, or your airflow setup is restricted enough that the proc can't go much faster without overheating. A good cooling setup can make or break you.

Leave DRAM refresh rate and idle timer on auto. Those really won't make too much of a difference.
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hochoi · TweakNOOB Joined: 22 Jun 2003 Posts: 212 Location: auburn

Thank a lot for your suggestion and explaination, fussnfeathers. I have only 1 120 fan in the back and the fan of PS which takes the hot air out. I tried before to add a fan on the side with the air blows directly to the CPU but have not done so this time. I think that also help the lower down the CPU's temp. This Prescott 3.0 is too hot :)
_________________
ASUS P4P800 SE
3.0 Ghz Overclocking to 3.39 Ghz. (225Ghz)
Temp: Idle: 40F, Fan: 2600RPM, Max: 53F :)

Know little, learn slowly but still happy :)

fussnfeathers · Lord of the Tweak Joined: 14 Dec 2004 Posts: 2763

Heck yes.........a Prescott with no active intake cooling is trouble!!!

I'm thinking you're not going to get much of an overclock at all, and you'll wind up damaging your processor. You simply don't have adequate cooling.

Stop all of your OC activities until you have the time and money to fix the cooling issue. Fans don't cost that much, really, and an aftermarket cooler that does a better job than the stock Intel one isn't all that much either. Post up a link (or even just a brand and model of case) so we can see what you have to work with. We'll start you on the right path to some proper cooling.
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hochoi · TweakNOOB Joined: 22 Jun 2003 Posts: 212 Location: auburn

I am using a CoolerMaster Cavalier 3 http://www.newegg.com/Product/Product.asp?Item=N82E16811119075

The power supply is decent (420W). I forgot the brand name.

Right now, my 3.0 P4 is running fine at 225Mhz (3.39Ghz) with CPU's temp is ~52Idle. Not notice loaded temp yet :) with the CPU fan is running at a modest speed ~2200RPM. The fan will kick itself off when the CPU's temp raises.

So far I am happy with this because I know I do not have proper cooling for OCing:)[/url]
_________________
ASUS P4P800 SE
3.0 Ghz Overclocking to 3.39 Ghz. (225Ghz)
Temp: Idle: 40F, Fan: 2600RPM, Max: 53F :)

Know little, learn slowly but still happy :)

hochoi · TweakNOOB Joined: 22 Jun 2003 Posts: 212 Location: auburn

I forogt to mention I am also using Silver 5.
_________________
ASUS P4P800 SE
3.0 Ghz Overclocking to 3.39 Ghz. (225Ghz)
Temp: Idle: 40F, Fan: 2600RPM, Max: 53F :)

Know little, learn slowly but still happy :)

ToggleHead · TWEAKGURU Joined: 03 Mar 2004 Posts: 4360 Location: Jersey

drop down to default! i dont like the 52 degree idle at all!...temps jump up rather quick when working.....youre chancing some serious damage!
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hochoi · TweakNOOB Joined: 22 Jun 2003 Posts: 212 Location: auburn

It actually posts the same temp even when I do not do OC !!!!
_________________
ASUS P4P800 SE
3.0 Ghz Overclocking to 3.39 Ghz. (225Ghz)
Temp: Idle: 40F, Fan: 2600RPM, Max: 53F :)

Know little, learn slowly but still happy :)

hochoi · TweakNOOB Joined: 22 Jun 2003 Posts: 212 Location: auburn

The temp at full load is 66 :)
_________________
ASUS P4P800 SE
3.0 Ghz Overclocking to 3.39 Ghz. (225Ghz)
Temp: Idle: 40F, Fan: 2600RPM, Max: 53F :)

Know little, learn slowly but still happy :)

ToggleHead · TWEAKGURU Joined: 03 Mar 2004 Posts: 4360 Location: Jersey

hmm..maybe im not remembering safe pressy temps.....

....i have a northwood chip....so our OC results may vary widely....

..plus i have a 30 cap chip...wonderful aircooling......and a great PSU

then theres the goo.....=P
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2old2care · Posted: Fri Sep 08, 2006 1:40 pm Post subject:

Too hot IMO.
Northy should run 50 to 55, prescott 55 to 60 if things are working right.
What do you have your Vcore set at? What utility are you using to measure the temps?
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hochoi · TweakNOOB Joined: 22 Jun 2003 Posts: 212 Location: auburn

I use Asus PC Probe to measure the temp. ToggleHead , please let me know what kind of colling system you are using. What is "30 cap chip"?
_________________
ASUS P4P800 SE
3.0 Ghz Overclocking to 3.39 Ghz. (225Ghz)
Temp: Idle: 40F, Fan: 2600RPM, Max: 53F :)

Know little, learn slowly but still happy :)

hochoi · TweakNOOB Joined: 22 Jun 2003 Posts: 212 Location: auburn

2old2care · Posted: Fri Sep 08, 2006 4:53 pm Post subject:

Asusprobe will tell you what that "auto" is. If you have a prescott 3.0E processor (socket 478) may be as low as 1.25V or as high as 1.4V.(max)
The more Volts, the more heat, too low of volts and it's not stable. Most Pressies run fine at 1.3 Volts. You may want to set it manually, then you know where it is.
I've found that most of these cpu's have a "sweet spot" of voltage. If, for example yours is good and stable at 1.275V, there's no reason to run it any higher, except for an extreme OC. Even then it usually doesn't take more than 1.3 or 1.325 to make it as stable as it will get.
At least that's been my experience.
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Liquid-Cooled Q9450 and an EeePC
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hochoi · TweakNOOB Joined: 22 Jun 2003 Posts: 212 Location: auburn

Nice tip, 2old2care. I will do this manually. Asus tells me the Vcore is around 1.32V-1.4V. Thank you.
_________________
ASUS P4P800 SE
3.0 Ghz Overclocking to 3.39 Ghz. (225Ghz)
Temp: Idle: 40F, Fan: 2600RPM, Max: 53F :)

Know little, learn slowly but still happy :)

fussnfeathers · Lord of the Tweak Joined: 14 Dec 2004 Posts: 2763

52c idle is too hot, even for a Prescott. 45c is about the average.

Ok, what I would do, just to start, is add an 80mm fan to the front of your case. Pretty much any one will do, but I would make it a lower airflow fan than the 120mm you have in the rear. Negative pressure inside the case is usually better........go grab a nice Antec fan from the local office supply store, they work good, last a long time, and don't cost much. Make sure the wind tunnel on your case door is adjusted as close to the proc heatsink as possible, the fan on the heatsink will draw cool air in through that.

Also, make sure you're not blocking the airflow in any way outside the case. Keep it away from walls, desks, and out of any "cpu cubbies" in your desk.......those are death for processors. All the fans in the world won't do you any good if you're choking the airflow from outside.

And make sure your wiring is neat. Try to run everything toward the mobo side of the case, otherwise the intake air will simply mill around inside a rats nest, and do you no good at all.
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hochoi · TweakNOOB Joined: 22 Jun 2003 Posts: 212 Location: auburn

Thank a lot, fussnfeathers. Is there any good website to buy cooling supply? I do not see how I can add the front fan. I can try to arrange my wiring. I think adding a fan on the side which helps blow the frash air directly to the CPU fans will help, too. Just do not know how to do it because of the tunel which comes with the case is sitting at that position (with the same purpose to help the CPU fan taking fresh air in).

I just increase my CPU fan speed to 2700 and it helps to drop the temp to Idle 49-50.

Another strange thing is I can not set my Vcore manually. I set it at 3.75V but the Asus probe shows a changin Vcore???? Please explain this.
_________________
ASUS P4P800 SE
3.0 Ghz Overclocking to 3.39 Ghz. (225Ghz)
Temp: Idle: 40F, Fan: 2600RPM, Max: 53F :)

Know little, learn slowly but still happy :)

2old2care · Posted: Sat Sep 09, 2006 9:01 pm Post subject:

hochoi · TweakNOOB Joined: 22 Jun 2003 Posts: 212 Location: auburn

You are absolutely right. It is 1.375

. Probably, the PS is not good as you mentioned. I decided to lower down to 215Mhz until I add another fan on the side to bring more fresh air in. This P4 is hot as hell :). The 2.6 Iused before is much cooler. At load (without OC), it is only ~30 !!!!

I am looking for a good fan now

_________________
ASUS P4P800 SE
3.0 Ghz Overclocking to 3.39 Ghz. (225Ghz)
Temp: Idle: 40F, Fan: 2600RPM, Max: 53F :)

Know little, learn slowly but still happy :)