Subject: Re: Pentium MB's
From: civileme (civileme@mandrakesoft.com)
Date: Sat Jul 20 2002 - 00:33:55 AKDT
On Friday 19 July 2002 09:01 pm, Adam Elkins wrote:
> On an old Pentium motherboard, when you upgrade to a higher cpu, is
> there something in the BIOS you need to do? I just replaced a 100 with a
> 166, and it's still saying it's a 100. A jumper maybe?
>
> Adam
>
>
> ---------
> To unsubscribe, send email to <aklug-request@aklug.org>
> with 'unsubscribe' in the message body.
Uf
Yep, you need to set a COUPLE of jumpers.
One set of jumpers is for system bus speed... It could be set to 50, 60, or
66 on m9ost boards and should not be set beyond 66 for Pentiums and early PCI
buses... An SiS 5571 chipset will manage 75 and probably not overclock the
PCI bus. Most likely for a P100 this will be set to 66 but it may be set to
50.
Now the other jumper set is the CPU multiplier (a misnomer really since it is
all dividing some crystal oscillator) which will run the CPU at a multiple of
the Bus speed. IN this case you want 2.5 times 66. If the P100 was running
at 1.5 times 66 (normal) then that is the only jumper to change, but if it
was running at 2 times 50, then the bus speed should be changed.
Now the question is, "Which Jumpers?"
Well for this you need a manual
And for the manual, you need to know the manufacturer and model
And for that, if it is not marked on the board you have to dredge up a number
silk-screened somewhere on the board that is the FCC identifier. It might
also be etched copper wave-soldered, but it must be there. No computers
sold in the US or likely elsewhere would be without one, at least not those
intended for unshielded rooms.
So FIND the FCC ID then go here:
And you can get the manufacturer and perhaps the model.
Then you use a google search for the manufacturer to get manuals... I say do
that because about 25 brand names will lead you to the same manufacturer of
terrible boards,
Once on the manufacturer site you can download the manual. Caution, some
idiot manufacturers put their manuals exclusively in .doc format. I never
buy their products, but I have run across their execrable sites in doing tech
support.
Civileme
---------
To unsubscribe, send email to <aklug-request@aklug.org>
with 'unsubscribe' in the message body.
This archive was generated by hypermail 2a23 : Sat Jul 20 2002 - 00:33:58 AKDT