S478 on DryIce

After getting 5.04GHz from my Prescott ( http://www.xtremesystems.org/forums/...&postcount=571 ) on Alu DI container I`ve decided to go get some more...
Bought myself copper container from kiwi
http://images.people.overclockers.ru/64010.jpg
Polished it like so:
http://images.people.overclockers.ru/64011.jpg
Got me some DI and I was ready to get more ! :)

But, sad things happened!
After testing my ASUS P4C800-E Deluxe with an ES on FSB350+ ( to check stability on high FSB) I found out that MoBo is dead ...:(
Having not enough time to go to get to the shop where I bought it, I found that the only MoBo i can use for this OC is P4P800-SE moBo. Because this MoBo can only give no more that 1.6V on Prescott I did not expect any good OC anymore. But that didn`t stop me from OCin`:)
Second bad thing about P4P800-SE is that on the particular MoBo i have had CPU fan frame can only be removed by damaging it, so I did not remove it.
That also didn`t stop me from serious OCin`

Especially for this OC I have finally bought myself a digital camera :D

My OC setup:
P4 Prescott E0 3.0GHz
ASUS P4P800-SE (Gold)
Kingston KHX3200AK2/1G (Winbond CH-5)
Galaxy 6600GT AGP
Q-Tec 500W PSU (i know that you`ll say to be aware from this PSU but it`s fine - it can hold FX-57 @ 3.9GHz + 2x7800GT without any problems...)
http://images.people.overclockers.ru/64012.jpg
http://images.people.overclockers.ru/64013.jpg
First (test) run shown that CPU idle temp was -39C

Firstly I was gonna get some Suicide shots...
Here`s the highest validated : http://valid.x86-secret.com/show_oc?id=81613
I also reached 4900MHz (but forgot to save validation file). :p:
For 1.6V I think it`s not so bad ...
System running :
http://images.people.overclockers.ru/64014.jpg
http://images.people.overclockers.ru/64015.jpg

Then I decided to bench it. The best I could do was 4.6GHz SuperPi 1M
http://images.people.overclockers.ru/64016.jpg
The reason why the result is so weak because I did not want any speed - I just wanted to reach the highest SuperPi 1M freq, so RAM was running FSB:DDR 3:2 @ 2.5-4-4-8. I did not run CPU-Z in the background because the whole system freezed after this run, so the best I could do was only to take a photo.
I also ran locan benchmark called "BootMark" @ 4.45GHz and achived 12882 points in it...
http://images.people.overclockers.ru/64009.png

It`s not bad for 1.6V Prescott ...;)

Then strange things have happened. The system failed to boot a couple of times so I decided to reset BIOS. OK, system starts now, but starting BIOS the whole system freezes. After a couple of restarts I`ve set the BIOS settings right and Started Windows.
That was the most shocking thing:
The whole system settings were reset - all the drivers were Windows stock, the desktop has changed to winXP default, the system settings have changed to WinXP default.
:confused: :confused: :confused:
The worst thing was that ClockGen did not run. System shown " ClockGen.exe is not a vilid Win32 application" :confused:

After that I did not have enough time to set the settings back because:
1)I was running out of DI
2)I have made a mistake by giving too much aceton in the contrainer, so it bagan to expand and could not fit anymore in the tube.

All that has made me to spot this DI run.
System "unfreezes"
http://images.people.overclockers.ru/64017.jpg
http://images.people.overclockers.ru/64018.jpg
But I gonna get me some LN2 and will try it one more time in April...

how did you mount the DI tube..?

I got a 3Ghz P4 to 4.5Ghz in Mach II for like 2 years ago I believe, this was a northwood.. at 1.72v.

Quote:

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how did you mount the DI tube..?

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Very good question. Answer - absolutely nothing (except its weight) did hold it. If there would have been a wind it just would fall off. The reason because nothing was holding it is that f****** ASUS engineers decided to make CPU fan holder that can`t be taken off without any damage to it..., so I couldn`t screw it to the MB

you lost some mhz there...

I have had 6 different P4C800 mobos, and the intel cpu fan holder is always going off..

On mine P4C800-E Deluxe it also went easily out, but this mobo is dead.
When are your mobos manufactured ?
This P4P800-SE is made on 3rd week of this year...

Looks like someone had fn turning the bench session :)

some v-mods would make a better result... and oc course you'll need the drop-mod

For my next OC (hope to use LN2) i will use fully modded P4C800-E Deluxe, so modding P4P800-SE is useless, of course, if P4C800-E Deluxe will not break in the last moment, as it did yesterday.

P.S. (just in case...) where can I find P4P800-SE Vdrop-mod guide (with pictures...) (gimme the link)

Xtreme Mods section has a lot of different mods ;)

TaPaKaH, for April benching i can help you with Antec PSU and redlines if u want.
You cant find vmod gouide? http://www.eoz.lv/forum/showthread.php?t=63

No, thanks Kasparz. I think that my Q-Tec 500W will be capable of LN2 run.
The biggest question for me now is: where can I get LN2 in Latvia ???

Send PM to vimba_zlobnaja@eoz.

I don't understand why you can't remove the factory P4 retension bracket.
Can't you just use a small flat head screwdriver to pry the 4 little white plugs up and then carefully remove it?

The reason is that the backsides of 4 little white plugs are bigger (wider) than the holes in the Mobo so they can`t technically be removed...without any damage

What?
i removed HS holder on P4C800, and it cant be more easy.

Lol see how red your hand is from the cold of DI :)

to Sam666
1)This is my left hand - I used my right hand to shovel the Dry Ice in to the tube
2)I used gloves (you can see on the photo in attachments)
3)DI is not THAT cold - I have even put it in my mouth for fun for about 10-15secs...

I took the heatsink retention brackets off a P4P800-SE. It should be very easy.

there`s something wrong with those new P4P800-SE boards. (my is made in January `06). The white thing (yep it`s the one that is in the back side of the mobo) is wider that the hole in the mobo...it doesn`t fit !
AAAAAAAh, who cares about it now ?

You might try something like this:
http://xs59.xs.to/pics/05505/dothanIceMount.jpg.xs.jpg

I used it when benched dothan. Retention bracket is there for another reason - ct479 adapter in way :slapass:

Quote:

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Originally Posted by TaPaKaH

No, thanks Kasparz. I think that my Q-Tec 500W will be capable of LN2 run.
The biggest question for me now is: where can I get LN2 in Latvia ???

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You gotta be kidding me :D Get better PSU, I am 99% sure that uder DI/LN it will help squeeze more Mhz. Did you measure rails of that Qtec? :D

What cooling paste are you using ??? AS5 is really crap for subzero.

Why Asus P4P800SE can give no more that 1.6V? my Asus can give 1.9V. VDroop here http://modlabs.net/index.php?locatio...s&url=p4p800-2

Great cooling and oc :)

get the vcore up and get the cooling down ! get some 5+ghz pix and get that ram right !

great job :) :toast:

to kiwi
Stop telling me that PSU is bad... it isn`t.
If it easily powered a 5.1GHz (1.8V) + 6800GT system a previous time why can`t it stop 4.7GHz (1.6V) + 6600GT system from OC more.

to Nitrogenium
As I can remember, you have a Northwood on yer P4P800SE. Then it`s fine - the mobo can give up to 1.95V on it.
But with the Prescott it`s the other story. Max voltage you can set and boot your system on is 1.6V (although the max is 1.95V) Setting 1.6125-1.95V on P4P800-SE in BIOS results in 0.9-1.2V in real voltage...

to DaWan
I used some Thermaltake silver cooling paste (don`t know the full name of it...)

Did you measure psu rails? If it is so good why don't you point me to PSU specs (including A on each rail and PSU weight), somehow I can't find them :)

Huh, nice overclock from someone in Latvia :)

Congrats with it, but your PSU is crap, it probably hold you back for reaching few more Mhz out of Prescot core :slap:

And you need better thermal grease for subzero looling like Ceramique Thermal Compound from Arctic Silver

to kiwi
To be honest, don`t know the specs myself. There`s no sticker with the specs at it... Did not measured it EVER (because I don`t know how...)
Weight (exact weight of mine PSU) ~2.2Kg

That Qtec 500W is the equivalent of a no name 350W PSU, even Qtec have stated there PSU rating is a PR system, not a real power rating. We've had them for ages in the UK and they're terrible, the failure rate is far higher than it should be.

If its working for you then great, personally I wouldn't risk it :)

TaPaKaH - you must buy voltmeter to test each rail of your PSU, it cost aprox. 5 to 10 Ls in Latvia :p: And then you can look what can your PSU handle at full load, if +12v rail is jumping up and down, then your PSU is the problem :slap:

And Q-Tec PSU are not good for normal PC not even for overclocking when pushing high :D

What do you expect me to do, then ? To go and buy 1000W monster for a couple of hundreds of $ ? I just don`t have money for all this.
And, if a power supply can handle a FX-57(3.9GHz)+SLI(7800GT@550/1300) without any problems, will it stop my Prescott + 6600GT from Ocing ?
I will measure +12V line today (later) on full load (Pentium630 @ 4.5 + SLI 7800GT @ 500/1200)...