P2B-D 1.04 + PIII 600B = 450 MHz ???

[Walter L. Williams]

My motherboard keeps reading the clock multiplier as 4.5x, overriding the
jumper settings I have used. The rev is 1.04 and the bios is 1014.003.

Does anyone know how I can get the chips working at 600 MHz (either at 100
MHz or 133 MHz)?

 

[Stephan Grossklass]

My motherboard keeps reading the clock multiplier as 4.5x, overriding the
jumper settings I have used. The rev is 1.04 and the bios is 1014.003.

Does anyone know how I can get the chips working at 600 MHz (either at 100
MHz or 133 MHz)?

A rev. 1.04 won't do 133 MHz, which is what would be needed to run a
600*B* at full speed; the multiplier is, of course, locked in the CPU as
with most Intel CPUs from the PII 350 upwards. You would've needed the
PIII 600 non-B ('cause B means FSB133).
If you're willing to shell out the ca$h and would feel comfortable with
just one CPU (APIC mode alone is quite nice as well), look at the
PL-iP3/T plus 1.4 GHz Tualatin Celeron. (Don't forget that the Tualatin
Cely equals a full-blown Coppermine PIII, which even at the same clock
speed is quite a bit faster than an old Katmai PIII like yours. Scaling
isn't too terrific above 1 GHz, but you can still expect a 1.4 GHz Cely
to give roughly twice the computing power.) Once you're done with the
CPU stuff, don't forget the I/O - a 1 GHz+ CPU is a waste when still
used with an old IBM DNES or similar antiques. Last generation 10k SCSI
or (with an additional UDMA100/133 - or, if you wish, SATA - controller)
current 7.2k IDE at least.

Stephan

 

[P2B]

My motherboard keeps reading the clock multiplier as 4.5x, overriding the
jumper settings I have used. The rev is 1.04 and the bios is 1014.003.

The CPUs are multiplier locked at 4.5x, jumpers have no effect as you
found out. P2B-D rev 1.04 maximum FSB is 112Mhz, so the fastest you will
be able to run P3 600B CPUs is 4.5 x 112 = 504Mhz

Does anyone know how I can get the chips working at 600 MHz (either at 100
MHz or 133 MHz)?

The CPUs were designed to run at 4.5 x 133 = 600Mhz. Your board can't do
133Mhz FSB (unless you change the clock chip )

 

[GUEST]

Is it possible that the board doesn't support faster then a 450MHz ? Did
you take a look on the asus website to confirm this ?

 

[BigJIm]

you need a board the will do 133mhz on the fsb. the multiplier is correct
for that chip but what you are getting is
is 4.5 x 100fsb instead of 4.5 x 133. If you can get your hands on a p3v133
or a p3v4x you will get the full potential out of the chip as these boards
would run at 66,100 or 133 fsb without over clocking.

 

[P2B]

you need a board the will do 133mhz on the fsb. the multiplier is correct
for that chip but what you are getting is
is 4.5 x 100fsb instead of 4.5 x 133. If you can get your hands on a p3v133
or a p3v4x you will get the full potential out of the chip as these boards
would run at 66,100 or 133 fsb without over clocking.

The OP has two CPUs and a dual processor board. Why are you suggesting
uniprocessor boards as an alternative?

 

[BigJIm]

I just told him how to get his chips running at 600 mhz as per his request.
I know the D board is a dual setup but I though he might like an
alternative.
I can't remember a board that asus made that would run dual EB chips.

 

[P2B]

I just told him how to get his chips running at 600 mhz as per his request.
I know the D board is a dual setup but I though he might like an
alternative.

Ahh, OK

I can't remember a board that asus made that would run dual EB chips.

P2B-D/DS Rev 1.06 D03 will, but seriously overclocks the PCI bus because
Asus left out the jumper to enable 1/4 PCI divider - although it can be
fixed:

http://tipperlinne.com/p2b-ds150.htm

The P3C-D also supports dual EB processors, but uses RDRAM.

 

[SpaceButler]

Ahh, OK


P2B-D/DS Rev 1.06 D03 will, but seriously overclocks the PCI bus
because Asus left out the jumper to enable 1/4 PCI divider - although
it can be fixed:

http://tipperlinne.com/p2b-ds150.htm

I have a P2B-VE rev 1.02 and one of the first PIII-450's(x4.5). This board
has a 9248 clock chip instead of the 9250 and can be set up to 133 with
either a 3 or 4 divider for PCI. It has new CAS2.5 133 cheap memory.

At 133 it will boot at 600MHz but is not stable. I think with a little
more voltage on the processor it would be. I've found the bios sets the
memory at 133 to be much slower than if it's running at 124. And at 124
fsb it's very stable and nothing gets hot.

So I suggest he try 124 fsb as a compromise which may be better than 133.
558 MHz isn't bad.

 

[P2B]

I have a P2B-VE rev 1.02 and one of the first PIII-450's(x4.5). This board
has a 9248 clock chip instead of the 9250 and can be set up to 133 with
either a 3 or 4 divider for PCI. It has new CAS2.5 133 cheap memory.

At 133 it will boot at 600MHz but is not stable. I think with a little
more voltage on the processor it would be. I've found the bios sets the
memory at 133 to be much slower than if it's running at 124. And at 124
fsb it's very stable and nothing gets hot.

So I suggest he try 124 fsb as a compromise which may be better than 133.
558 MHz isn't bad.

Your P2B-VE has much more flexible FSB/PCI clock settings than the OPs
P2B-D rev 1.04. He can't set the FSB any higher than 112Mhz, as I
pointed out earlier.