PB 600 MB

Does anyone know if my PB 600 mb can handle a 233 cpu?
mc

Hi mc !

"mc" wrote in message
...
Does anyone know if my PB 600 mb can handle a 233 cpu?
mc

Depends. I don't know what motherboard you have, but if it has a voltage
regulator that supports MMX CPU's, it (probably) will. You have to have dual
voltage support to handle a 233MHz CPU, 'cause they are all dual voltage,
and MMX. The core voltage of 2.8V is less than the normal unified voltage of
a 3.3V Pentium CPU.

Then you are going to need to increase your clock multiplier to 3.5 X 66MHz
FSB speed.

Your motherboard may not do that either. Some PB motherboards have an
undocumented 3.5 clock multiplier, some do not. Fortunately, if you have
dual voltage capability, you probably have that feature also. I forget where
to put the jumpers, but it's easy to find.

Of course, you will need BIOS support also. :-)

OR....

You can install some type of "upgrade" CPU, which will have a voltage
regulator built in. You will still need to adjust your FSB speed to 66MHz to
get the best performance. The Intel Overdrive CPU stops at 200MHz, and is a
real nice drop in mod, but others, from Evergreen for example, go "up to"
400MHz.

OR....

You can find a motherboard that does everything listed above, and swap the
thing out if yours doesn't support your 233MHz CPU. Plenty usually available
on eBay. For that matter, a MMX PB usually shows up frequently, then you can
just swap out the whole thing. :-)


--
bobwatts

Watts Carburetion Service
WhizzBang Computers
" collector of Asian transfat plastic trinkets ! "
EartH // KlaXXoN

Robert E. Watts wrote:
Hi mc !

"mc" wrote in message
...
Does anyone know if my PB 600 mb can handle a 233 cpu?
mc

Depends. I don't know what motherboard you have, but if it has a voltage
regulator that supports MMX CPU's, it (probably) will. You have to have dual
voltage support to handle a 233MHz CPU, 'cause they are all dual voltage,
and MMX. The core voltage of 2.8V is less than the normal unified voltage of
a 3.3V Pentium CPU.

Then you are going to need to increase your clock multiplier to 3.5 X 66MHz
FSB speed.

Your motherboard may not do that either. Some PB motherboards have an
undocumented 3.5 clock multiplier, some do not. Fortunately, if you have
dual voltage capability, you probably have that feature also. I forget where
to put the jumpers, but it's easy to find.

Of course, you will need BIOS support also. :-)

OR....

You can install some type of "upgrade" CPU, which will have a voltage
regulator built in. You will still need to adjust your FSB speed to 66MHz to
get the best performance. The Intel Overdrive CPU stops at 200MHz, and is a
real nice drop in mod, but others, from Evergreen for example, go "up to"
400MHz.

OR....

You can find a motherboard that does everything listed above, and swap the
thing out if yours doesn't support your 233MHz CPU. Plenty usually available
on eBay. For that matter, a MMX PB usually shows up frequently, then you can
just swap out the whole thing. :-)


Let me add that the motherboard jumper setting for 3.5 x 66MHz is the
same as 1.5 x 66MHz (100MHz). AFAIK, this is true for any and all
Socket 5/7 motherboards. The Intel Socket 5-or-7 Pentium CPUs, classic
and MMX alike, have only two CLKMUL pins to set the clock multiplier.
The original settings were 1.5, 2.0, 2.5 and 3.0. Along came the 233Mhz
3.5 setting, and Intel had to re-use the 1.5 setting for compatibility
reasons.

Some Pentium motherboards have a socket for a separate tiny voltage
regulator board. I once had a bunch of these that could step the CPU
voltage all the way down to 2.2v via jumper settings. I still may have
a few... Ben Myers

On Jan 25, 8:05*am, "Robert E. Watts" wrote:
Hi mc !

"mc" wrote in message

...

Does anyone know if my PB 600 mb can handle a 233 cpu?
mc

Depends. I don't know what motherboard you have, but if it *has a voltage
regulator that supports MMX CPU's, it (probably) will. You have to have dual
voltage support to handle a 233MHz CPU, 'cause they are all dual voltage,
and MMX. The core voltage of 2.8V is less than the normal unified voltage of
a 3.3V Pentium CPU.

Then you are going to need to increase your clock multiplier to 3.5 X 66MHz
FSB speed.

Your motherboard may not do that either. Some PB motherboards have an
undocumented 3.5 clock multiplier, some do not. Fortunately, if you have
dual voltage capability, you probably have that feature also. I forget where
to put the jumpers, but it's easy to find.

Of course, you will need BIOS support also. * :-)

OR....

You can install some type of "upgrade" CPU, which will have a voltage
regulator built in. You will still need to adjust your FSB speed to 66MHz to
get the best performance. The Intel Overdrive CPU stops at 200MHz, and is a
real nice drop in mod, but others, from Evergreen for example, go "up to"
400MHz.

OR....

You can find a motherboard that does everything listed above, and swap the
thing out if yours doesn't support your 233MHz CPU. Plenty usually available
on eBay. For that matter, a MMX PB usually shows up frequently, then you can
just swap out the whole thing. * :-)

--
bobwatts

Watts Carburetion Service
WhizzBang Computers
" collector of Asian transfat plastic trinkets ! "
EartH // *KlaXXoN

Thanks for the info Bob, I have a J28 jumper on this board that says
VR 3.3V or VRE 3.45-3.6V. Will this be enough?
I also have J30 for cpu clock freq A, 60/66MHz or 50Mhz and J31 for
cpu clock freq B, 66MHz or 50/60 Mhz. I don't really understand how to
set these (if they will work with a 233). I am not familiar with
Evergreen, are these cpus still available? If so I could use 4 of
them. Or take your suggestion and get some other motherboards
mc

On Jan 25, 8:58*am, Ben Myers wrote:
Robert E. Watts wrote:
Hi mc !

"mc" wrote in message
...
Does anyone know if my PB 600 mb can handle a 233 cpu?
mc

Depends. I don't know what motherboard you have, but if it *has a voltage
regulator that supports MMX CPU's, it (probably) will. You have to have dual
voltage support to handle a 233MHz CPU, 'cause they are all dual voltage,
and MMX. The core voltage of 2.8V is less than the normal unified voltage of
a 3.3V Pentium CPU.

Then you are going to need to increase your clock multiplier to 3.5 X 66MHz
FSB speed.

Your motherboard may not do that either. Some PB motherboards have an
undocumented 3.5 clock multiplier, some do not. Fortunately, if you have
dual voltage capability, you probably have that feature also. I forget where
to put the jumpers, but it's easy to find.

Of course, you will need BIOS support also. * :-)

OR....

You can install some type of "upgrade" CPU, which will have a voltage
regulator built in. You will still need to adjust your FSB speed to 66MHz to
get the best performance. The Intel Overdrive CPU stops at 200MHz, and is a
real nice drop in mod, but others, from Evergreen for example, go "up to"
400MHz.

OR....

You can find a motherboard that does everything listed above, and swap the
thing out if yours doesn't support your 233MHz CPU. Plenty usually available
on eBay. For that matter, a MMX PB usually shows up frequently, then you can
just swap out the whole thing. * :-)

Let me add that the motherboard jumper setting for 3.5 x 66MHz is the
same as 1.5 x 66MHz (100MHz). *AFAIK, this is true for any and all
Socket 5/7 motherboards. *The Intel Socket 5-or-7 Pentium CPUs, classic
and MMX alike, have only two CLKMUL pins to set the clock multiplier.
The original settings were 1.5, 2.0, 2.5 and 3.0. *Along came the 233Mhz
* 3.5 setting, and Intel had to re-use the 1.5 setting for compatibility
reasons.

Some Pentium motherboards have a socket for a separate tiny voltage
regulator board. *I once had a bunch of these that could step the CPU
voltage all the way down to 2.2v via jumper settings. *I still may have
a few... Ben Myers- Hide quoted text -

- Show quoted text -

Hello Ben,
I see I missed a couple MBs you posted here in the last several
months, I would have contacted you on those but I've just completed 6
months of chemo (not my best year in 2009). So do you think a 233
might work? I don't have any yet but my attempt is to get the
computers to work with a network printer that will not install drivers
unless it sees a minimum of a 233 cpu..
mc

mc wrote:
On Jan 25, 8:58 am, Ben Myers wrote:
Robert E. Watts wrote:
Hi mc !
"mc" wrote in message
...
Does anyone know if my PB 600 mb can handle a 233 cpu?
mc
Depends. I don't know what motherboard you have, but if it has a voltage
regulator that supports MMX CPU's, it (probably) will. You have to have dual
voltage support to handle a 233MHz CPU, 'cause they are all dual voltage,
and MMX. The core voltage of 2.8V is less than the normal unified voltage of
a 3.3V Pentium CPU.
Then you are going to need to increase your clock multiplier to 3.5 X 66MHz
FSB speed.
Your motherboard may not do that either. Some PB motherboards have an
undocumented 3.5 clock multiplier, some do not. Fortunately, if you have
dual voltage capability, you probably have that feature also. I forget where
to put the jumpers, but it's easy to find.
Of course, you will need BIOS support also. :-)
OR....
You can install some type of "upgrade" CPU, which will have a voltage
regulator built in. You will still need to adjust your FSB speed to 66MHz to
get the best performance. The Intel Overdrive CPU stops at 200MHz, and is a
real nice drop in mod, but others, from Evergreen for example, go "up to"
400MHz.
OR....
You can find a motherboard that does everything listed above, and swap the
thing out if yours doesn't support your 233MHz CPU. Plenty usually available
on eBay. For that matter, a MMX PB usually shows up frequently, then you can
just swap out the whole thing. :-)
Let me add that the motherboard jumper setting for 3.5 x 66MHz is the
same as 1.5 x 66MHz (100MHz). AFAIK, this is true for any and all
Socket 5/7 motherboards. The Intel Socket 5-or-7 Pentium CPUs, classic
and MMX alike, have only two CLKMUL pins to set the clock multiplier.
The original settings were 1.5, 2.0, 2.5 and 3.0. Along came the 233Mhz
3.5 setting, and Intel had to re-use the 1.5 setting for compatibility
reasons.

Some Pentium motherboards have a socket for a separate tiny voltage
regulator board. I once had a bunch of these that could step the CPU
voltage all the way down to 2.2v via jumper settings. I still may have
a few... Ben Myers- Hide quoted text -

- Show quoted text -

Hello Ben,
I see I missed a couple MBs you posted here in the last several
months, I would have contacted you on those but I've just completed 6
months of chemo (not my best year in 2009). So do you think a 233
might work? I don't have any yet but my attempt is to get the
computers to work with a network printer that will not install drivers
unless it sees a minimum of a 233 cpu..
mc

From the description you gave to Bob Watts about the voltage jumpers, I
think that installing a 233MHz Pentium MMX is risky. Some people have
reported success with the voltage jumper at the lowest setting, but that
would still run the CPU at a voltage over 10% above its operating range,
a recipe for burnout.

Let me look in my box of curios and oddities to see if I have an
Evergreen or similar CPU 200MHz or faster. Or maybe even a couple of
them. I may still have a couple... Ben

On Jan 25, 10:07*pm, Ben Myers wrote:
mc wrote:
On Jan 25, 8:58 am, Ben Myers wrote:
Robert E. Watts wrote:
Hi mc !
"mc" wrote in message
....
Does anyone know if my PB 600 mb can handle a 233 cpu?
mc
Depends. I don't know what motherboard you have, but if it *has a voltage
regulator that supports MMX CPU's, it (probably) will. You have to have dual
voltage support to handle a 233MHz CPU, 'cause they are all dual voltage,
and MMX. The core voltage of 2.8V is less than the normal unified voltage of
a 3.3V Pentium CPU.
Then you are going to need to increase your clock multiplier to 3.5 X 66MHz
FSB speed.
Your motherboard may not do that either. Some PB motherboards have an
undocumented 3.5 clock multiplier, some do not. Fortunately, if you have
dual voltage capability, you probably have that feature also. I forget where
to put the jumpers, but it's easy to find.
Of course, you will need BIOS support also. * :-)
OR....
You can install some type of "upgrade" CPU, which will have a voltage
regulator built in. You will still need to adjust your FSB speed to 66MHz to
get the best performance. The Intel Overdrive CPU stops at 200MHz, and is a
real nice drop in mod, but others, from Evergreen for example, go "up to"
400MHz.
OR....
You can find a motherboard that does everything listed above, and swap the
thing out if yours doesn't support your 233MHz CPU. Plenty usually available
on eBay. For that matter, a MMX PB usually shows up frequently, then you can
just swap out the whole thing. * :-)
Let me add that the motherboard jumper setting for 3.5 x 66MHz is the
same as 1.5 x 66MHz (100MHz). *AFAIK, this is true for any and all
Socket 5/7 motherboards. *The Intel Socket 5-or-7 Pentium CPUs, classic
and MMX alike, have only two CLKMUL pins to set the clock multiplier.
The original settings were 1.5, 2.0, 2.5 and 3.0. *Along came the 233Mhz
* 3.5 setting, and Intel had to re-use the 1.5 setting for compatibility
reasons.

Some Pentium motherboards have a socket for a separate tiny voltage
regulator board. *I once had a bunch of these that could step the CPU
voltage all the way down to 2.2v via jumper settings. *I still may have
a few... Ben Myers- Hide quoted text -

- Show quoted text -

Hello Ben,
I see I missed a couple MBs you posted here in the last several
months, I would have contacted you on those but I've just completed 6
months of chemo (not my best year in 2009). So do you think a 233
might work? I don't have any yet but my attempt is to get the
computers to work with a network printer that will not install drivers
unless it sees a minimum of a 233 cpu..
mc

*From the description you gave to Bob Watts about the voltage jumpers, I
think that installing a 233MHz Pentium MMX is risky. *Some people have
reported success with the voltage jumper at the lowest setting, but that
would still run the CPU at a voltage over 10% above its operating range,
a recipe for burnout.

Let me look in my box of curios and oddities to see if I have an
Evergreen or similar CPU 200MHz or faster. Or maybe even a couple of
them. *I may still have a couple... Ben- Hide quoted text -

- Show quoted text -

Thanks for looking Ben, let me know if you find anything..
mc