Celeron/p2 400 overclocking

[MrP]

possibly getting a couple of machines thrownmy way, they are 400 mhz machine that are either celeron or p2. how is best to overclock them, i kow it has to be by the FSB, but can you alter the voltage, ae their anyother good ways of getting more out of them

thanks

toodles :xmad2:

[Neo]

It depends on the motherboard. The celeron with good cooling should oc very well. Run it as close to 100mhz fsb as you can get it. The pII would be a little hard to oc. The celeron are know for oc with much VT. The celeron 366 would do 550mhz with out any problems. when you get it ICQ me. Remeber that these are manufactured on the .25 fab so they run a lot hotter than a new tbird.

[MrP]

Will do mate,

at the mo they have problems with some hardware somewhere (will boot up fine one time, and wont at all th net untill you push evrything home again or bend the mobo)

how do you up the vcore, ami right in says that you can only put it up by 0.1v on the p2/p3's??

toodles :xmad2:

[Neo]

depends on the motherboard.

[MrP]

Fair enough!

toodles :xmad2:

[Thenarsky]

The PII's won't overclock nearly as well because they don't have on die cache. Between the .25 micron fabrication and the .21 they put the cache on die and got the PIII. The Celeron on the other hand has no such inhibitions. But good luck whatever you decide to do.

[mackerel]

I only ever tried overclocking two PIIs, with reasonable success. This was on a Chaintech 6BTM motherboard, nothing special. It had no voltage adjustment, and only supported bus speeds of 100, 103, 112, 133 (and proportionally lower for Celerons).

My first PII was a 350. This would overclock to 466 no problems just by setting the jumpers to a 133 bus. But I didn't have an AGP video card that could take the increased bus speed.

When troubleshooting a friend's setup, I took out his PII450 and put it in place of my 350. Setting the bus to 112 gave 504 stable. Didn't work at all at 133 bus, not surprising as I was asking for 600 MHz out of it!

From memory, the fastest PII sold was 450, and the later PIIs of any speed could easily overclock to that speed. Early PIIs were not multiplier locked so that might be worth a try too.

My fave CPU was a Celeron 366. At default voltage with air cooling, I had one of these running at 610 MHz in an Asus CUSL2 I possibly could have gone higher but the jump to the next bus speed of 124 MHz was too much...

[MrP]

Hullo,

right, i now have these babiesin my possesion!!

ok, machine number 1

no name slot1, "AT" motherboard, although it has multipliers from 2.0 to 8.0 and FB speeds of 66,100,112,133. Chipset has a heatsink on it with "BXCel" writtn on it.The other chipset chip has the following codes on it
"HT1543 TS07B1"
9810 TAIWAN
CD163160000E

the chip is a celeron 400, on a slot to socket adapter (again no name) with retail heatsink onit.

The second machine is as follows

slot 1 "atx" motherboard, 44BX chipset. Multipliers from 3.0 to 5.5 on the board, with FSB speeds of 66,75, 83, 100, 112

retail celeron chip, on slot to socket adapter. (already clocked to 450, but not tested as yet)

No codes i can see, apart from the board has "Ver 1.4" written on it, but no name or anything els to identify it

hope someone can help me with these

toodles :xmad2:

[mackerel]

So you have two boards and two celeron 400s right?

For the second one, you can probably just set it to 75 or 83 and see what happens. On either, 100 MHz bus is probably too much but have a go anyway! If you take off the heatsinks and thermal gunk, you can read off the numbers and look them up in the database at www.overclockers.com to see what others have got out of similar chips.

As for identifying the motherboards... could be trickier. Boot them up and see what they say. I believe it's possible to identify the manufacturer from the string of numbers at the bottom, but I can't remember where to look them up.

There's a proggy here that may be of use... http://www.unicore.com/biosagent/
It tries to detect your bios info.

I guess something like Sandra would do as well.
http://www.sisoftware.demon.co.uk/

[Thenarsky]

Hey Mackerel, just one question unrelated to this article for you: where did you find that awesome anime in your icon? I love anime and that one particularly catches my eye. Thanks for your help in advance

[mackerel]

Thenarsky, it's a random pic I found in a newsgroup... I don't anything about it other than it's taken from some game... (YGPM)

I used it as I wanted to outdo Crabbles' old avatar

[Thenarsky]

Well, what good are you? OH well, I won't hold it against you as it is very tasteful and any man with such good tastes deserves respect.

[MrP]

right then, bringing this back on subject

the AT styl board is made by a company called PC100, otherwise known as PC Chips! th board is a M726V34A

i dunno what the V34A means, as i cant see a referance to it on the web site, but at least it means i can figure it all out.

Does anyone know of any tweaked BIOS's for this board like the one i found for the M810LMR board by preacher phil??

Am working on the other one now, and also finding out what the steppings are, i asume that these are on the front of the chip (which is covered in about an inch of gunk )

toodles :xmad2:

[MrP]

ok, got 1 chip cleaned up.

the codes on it are as follows

B8052 4P 400
128 SL37X
MALAY
L9074252-0087

second chip and board to follow

toodles :xmad2:

[MrP]

Hullo,

second chip,

B8052 4P 400
128 SL37X
MALAY
L9035449-0630

Gotta figure out the board now

toodles :xmad2: