celeron 600: i can't increase votlage. help!

[aandreatos]

To http://overclockers.cssftware.com/cpudb/showdata.cfm
May 11, 2001-------

Dear fellows, i need you help.
i have a celeron 600 (FSB 66 MHz, Malay.) 1.6 V,
on a mobo p6bap-a+ w/ SDRAM PC100. It works fine @ 750 MHz (FSB 83*9).

I want to use FSB 100 MHz.
Since the multiplier is locked, i force the mobo to run @ 100 MHz FSB
with a jumper (force 100mhz), but the system does not start up.

I suppose that i must raise the voltage to 1.9-2 V.
the problem is that i have no way to do it, since
there is neither an option in BIOS, nor a jumper on my mobo.

Any suggestions? Thanks in advance. aandreatos@hotmail.com

[engjohn]

Get a slocket from Abit or Asus if it is a slot one board, otherwise get a new Abit or Asus MB.

[Super]

Burn the chip! thats what worked for me. ( I took me about 6-8 hours of burning to get to 100MHz FSB, but it hanged, so I burned it some more and now its ok, boots at 900 with no problem)

[OLeung]

i never knew 1.6 volt celeron existed

[murdoch]

OLeung (May 11, 2001 01:42 p.m.):
i never knew 1.6 volt celeron existed

wasn't that the earlier version with cbo stepping.

[aandreatos]

Super (May 11, 2001 12:08 p.m.):
Burn the chip! thats what worked for me. ( I took me about 6-8 hours of burning to get to 100MHz FSB, but it hanged, so I burned it some more and now its ok, boots at 900 with no problem)
=========
thanks, but what do you mean "burn"?

[mrpcman]

no, the cbo's were 1.55....I think.

[R@îЀR]

I have the same probleme with a celeron 633 at
a ELITEGROPU P6BAT-A+ Meinboard..
i think it is because of the via chipset...
hmm i need some help, too
..
at 790 (83*9,5) stable
at 950(100*9,5) - boot, but i can not start programms
at 950 i tried voltages up to 2,4 but no luck..

[mrpcman]

what type of temps do you get?

[aandreatos]

dear fellow, i have the same motherboard.
how can you increase the voltage ?



R@îЀR (May 12, 2001 02:48 a.m.):
I have the same probleme with a celeron 633 at
a ELITEGROPU P6BAT-A+ Meinboard..
i think it is because of the via chipset...
hmm i need some help, too
..
at 790 (83*9,5) stable
at 950(100*9,5) - boot, but i can not start programms
at 950 i tried voltages up to 2,4 but no luck..

[Mr B]

I'd agree with Engjohn here....you really might want to look into a board.

Abit, Asus and Soyo make some really good ones......Get a slot 1 board, and either a MSI MASTER or Soltek SL02A++ slocket adapter. This will let you set the vcore to anything you want.

Mr B

[Wunder]

I have the same problem, although with a different mobo. mrB zez change mobo, well thats an expensive and unnecesary solution if you ask me. There are ways of changing Vcore by covering pins on the processor, but seems no one here knows how to do it. I'm sure some page on the internet describes how to, but i havent found any...

[Mr B]

Wunder (May 12, 2001 03:28 p.m.):
I have the same problem, although with a different mobo. mrB zez change mobo, well thats an expensive and unnecesary solution if you ask me. There are ways of changing Vcore by covering pins on the processor, but seems no one here knows how to do it. I'm sure some page on the internet describes how to, but i havent found any...

Not necessarily expensive....

I got my Soyo 6BA+III for $10, plus $5 for shipping, 'cuz it has bad PS/2 ports...USB keyboard and mouse works quite well, thank you.

I got my Asus P3C2000 mb for $75, plus shipping, 'cuz no one wants the i820 chipset, with the Memory Translator Hub. Damned if'n it isn't stable, and runs my P/// at a 59% overclock, though.

Motherboards aren't necessarily expensive, you just need to know what to look for.......I also got lucky and got the P/// for $75.

No, I didn't get any warranty with any of the above, but, then again, I didn't outlay a mint for them, so if it doesn't work, or last, I'm not out a ton of $$ either.

But for $150, I got a board and processor, shipped, that runs like a P/// 950.

Can't beat that with a stick........

Mr B

[outhouse]

you can find vidpinning info at www.hardocp.com look in the articles section note vidpinning does not work for every board though. you can also put a pot from the fb pin on your power management IC to ground but I think I'd take mr B's adsvise before gowing this route as any mistake,s and you'll be buying a new board.

[Slake]

Good thread. BUMP

[OLeung]

mrpcman (May 12, 2001 02:23 a.m.):
no, the cbo's were 1.55....I think.

cBo's r 1.5v
cCo's r 1.7v

not sure bout cdo's

[Newbie_Doo]

outhouse (May 12, 2001 07:40 p.m.):
you can find vidpinning info at www.hardocp.com look in the articles section note vidpinning does not work for every board though. you can also put a pot from the fb pin on your power management IC to ground but I think I'd take mr B's adsvise before gowing this route as any mistake,s and you'll be buying a new board.

Good advice, but incomplete. Depending on what the default voltage is on his chip, reading and utilizing the [H]ardOCP vid-pin article could be FATAL to his chip. That article was written for chips that default at 1.5V.

Read the Intel Datasheet (http://developer.intel.com/design/celeron/datashts/243658.htm) and make note of the specific pin combinations for your default voltage, and then see what combinations are available to you for YOUR chip.

Anthony

[outhouse]

i'm not saying your wrong but according to the article it works for many different chips including p3's as well as cellies and when you vidpin you are now selecting a new default voltage, i'm really wanting to learn about this subject as i cannot get more CV on my vh6-2 using a p3\1g i tried the link but no go maybe server was down will try later any more info on why it would fry his chip would be helpful

[batboy]

Newbie is right about you having to look out for which default voltage you have and making sure you match it up right on the chart. That article is actually written for a 1.5v default Celly cB0 CPU like was mentioned. All coppermine chips will work, if you follow the chart and pin diagram, but you have figure out which pins are already internally connected to VSS (determined by the default voltage), then proceed from there. Those chips with 1.65v default are limited in what can be done with the "wire trick" (the only option is 2.05v). Those with 1.5v and 1.7v default CPUs are lucky, lots of voltage settings to choose from.

[Wunder]

Damn!
This is really interesting, and probably the only way to OC if you got a "brand-name" pc. I mean, both FSB (only 66, 100 and 133) and Vcore can be set to by pincovering. That page from hardocp is really dificult (me swede, me no understand english).
Therefore I COMMAND some of you people from overclockers.com to put up a page right here that explains the thing as easy as possible, and it must be applicable to all FCPGA processors. Anyone wanna do it?

[aandreatos]

outhouse (May 12, 2001 07:40 p.m.):
you can find vidpinning info at www.hardocp.com look in the articles section note vidpinning does not work for every board though. you can also put a pot from the fb pin on your power management IC to ground but I think I'd take mr B's adsvise before gowing this route as any mistake,s and you'll be buying a new board.

DEAR OUTHOUSE:
my celeron works @1,5v, but i can't find the vidpinning article (although i can find the articles section). can you pls. give me more info?

[Newbie_Doo]

Newbie_Doo (May 13, 2001 11:50 p.m.):
outhouse (May 12, 2001 07:40 p.m.):
you can find vidpinning info at www.hardocp.com look in the articles section note vidpinning does not work for every board though. you can also put a pot from the fb pin on your power management IC to ground but I think I'd take mr B's adsvise before gowing this route as any mistake,s and you'll be buying a new board.

Good advice, but incomplete. Depending on what the default voltage is on his chip, reading and utilizing the [H]ardOCP vid-pin article could be FATAL to his chip. That article was written for chips that default at 1.5V.

Read the Intel Datasheet (http://developer.intel.com/design/celeron/datashts/243658.htm) and make note of the specific pin combinations for your default voltage, and then see what combinations are available to you for YOUR chip.

Anthony

Click on the above link and download the datasheet. You will need the Acrobat reader to view it. Print page 18, page 23, and page 87. Page 18 lists the table of Vid pin connections for each voltage attainable. NOTE THAT IF A PIN IS CONNECTED TO Vss IT CANNOT BE CHANGED. Match the combination that equates to YOUR default voltage (see page 23) and identify the pins on your CPU (page 87).

Now identify which voltages you can do with your internal Vss connection and plot it out on your page 87 paper BEFORE you wire it up. Know which way your CPU is facing, triple-check the pin layout, say a prayer, get a magnifying glass and a sewing needle and a strand of fine copper wire and make the connections by turning the wire around the pins with the needle.

Please note that if you FRY your cpu by doing this, it is YOUR fault. That said...I wish you luck! :)

[logos]

OLeung (May 13, 2001 08:59 a.m.):
mrpcman (May 12, 2001 02:23 a.m.):
no, the cbo's were 1.55....I think.

cBo's r 1.5v
cCo's r 1.7v

not sure bout cdo's

hmm i had cbo and cco at 1.65 and 1.7! and Batboy has graciously posted many a vid-pinning diagram in previous threads, could be worth a look back

[Wunder]

where is that diagram? cant find it...

[Newbie_Doo]

Which diagram?

If you must read the article on [H]ard|OCP, it can be found HERE (http://www.hardocp.com/articles/intel_stuff/bumpvoltage.html).

Anthony

[hooww are youu doing]

The Default votage is 1.6v and 1.7 for celeron2 between 533 to 766!!!!!!

[Newbie_Doo]

hooww are youu doing (May 23, 2001 01:23 p.m.):
The Default votage is 1.6v and 1.7 for celeron2 between 533 to 766!!!!!!

This information is incorrect. Please check your facts before you assist someone in frying their CPU. I have a cB0 stepping C2-600, and the default voltage is 1.50V. If you need further information, please download the datasheet from the link above and study it. Feel free to ask a question if you are unsure of something.

[Mr B]

Newbie_Doo (May 23, 2001 05:12 p.m.):
hooww are youu doing (May 23, 2001 01:23 p.m.):
The Default votage is 1.6v and 1.7 for celeron2 between 533 to 766!!!!!!

This information is incorrect. Please check your facts before you assist someone in frying their CPU. I have a cB0 stepping C2-600, and the default voltage is 1.50V. If you need further information, please download the datasheet from the link above and study it. Feel free to ask a question if you are unsure of something.

If memory serves...all cC0 stepping Celeron II's are 1.7v, the others (cB0, etc..) are 1.5v. There are no 1.55v or 1.6v, or 1.65v Celeron II's...

Mr B

[logos]

it seems none of us knows what we are talking about. I would surmise that a cbo comes in various default v's and maybe a cco comes in various default v's as well.

if i had a scanner i would scan the cbo cII633 i just pulled from this box and post it but i have it here in my hand and it says 1.65v (now i have arctic silver on the keyboard!).

[outhouse]

Just so everyone knows I did have luck vidpinning this time. Thanks to Newbie_Doo for showing me the errors of my ways and to Batboy for walking me through it. All i can say is pay attention to your default voltage when doing this and make sure your cooling system can handle the extra voltage. As far as default voltage if i set in BIOS everything to optimized performance it sets my proccesor to default voltage i'm running the vh6-2 and i'm not sure if it will work like that on your MB but I thought i'd see if i could help.

[Endeavor]

is this possible to get the FSB to 100? because if it is, my CPU ratio is locked at 10.5 and if i can raise the FSB to 100 then ill have a 1050mhz machine, granted il need some expensive cooling, but is it possible with a 700mhz celery chip?

[Treker]

Endeavor (May 24, 2001 12:43 a.m.):
is this possible to get the FSB to 100? because if it is, my CPU ratio is locked at 10.5 and if i can raise the FSB to 100 then ill have a 1050mhz machine, granted il need some expensive cooling, but is it possible with a 700mhz celery chip?

I dont know about a celly, but my 700mhz p3 can handle 1050 at default voltage, but I like to bump it up just incase, also thats hitting 150+ fsb.

-Trek

[PupsterXero]

I've done this trick before with the help from newbie_doo, and I must say it works good. My 600 runs stable at 950. I have another question though, is there any way to modify the pins to change the DEFAULT FSB speed? My motherboard has a VIA chipset which allows memory to run +33MHz over the FSB speed. But on this board, it only works if the motherboard is set to autodetect the FSB speed. If I force it to 100MHz, I can't change the memory speed, but it works if I leave it on autodetect (66mhz). And, yes, I have PC133 ram.