I looked in eBay and a company in Canada is selling a lot of PL1600 parts.
They have PL 1600 processor boards. I see the processor board has two CPU
card slots and four SIMM sockets. My PL2500 processor board has four memory
module sockets, two CPU card slots and a memory expansion card slot. The
memory in the PL2500 is EDO ECC 66MHz and (I think) 3.3V. The memory
reference I found for the PL1600 says the memory is PC100 Registered ECC.

Could I just swap processor boards? (Does the PL1600 processor board mount
into my PL2500 processor cage?) If so, can I temporarily continue using the
P II 333 CPUs with their 66MHz FSB... just so I could be sure it all works
before upgrading CPUs?

Will the EDO memory still work as long as the FSB is set to 66MHz? Does the
PL1600 processor board have a slot for a memory expansion card? If so, will
my PL2500 memory expansion card work?

I guess the underlying question is: Which parts must I swap out, as a
minimum, to change my box to a PL1600?

Thanks
John Dean


"Nut Cracker" wrote in message
...
i have not heard of getting those Celerons working in proliant servers.

If you really need the upgrade, look for an old PL1600. It has a 100Mhz
bus, and should support upto 550mhz PIII processors. Those things have to
be just about free on eBay now ... or, get the guts from a 1600 and put it
in the 2500 case? the are basicall the same.

- LC

"John Dean" wrote in message
...

"msg" wrote in message
...
John Dean wrote:

Is there a BIOS patch for Celerons? Or, one for ignoring the CPU check?
Is the BIOS in flash memory, and if so what tools would I need to have
to read out a copy of it for modification and reinsertion (assuming I
had to hack it myself)?

Please see previous posts in this newsgroup in PL 3000 BIOS tweaks.

Michael Grigoni
Cybertheque Museum

Sorry.... arithmetic error. Should not do it in my head when tired. The
multiplier is seven, not nine. The fastest Celeron PPGA they made was, I
believe, a 533 which is eight X 66 (probably... did it in my head
again).

Also the Celeron is the same as the P II series that ran at 100MHz FSB...
350, 400, 450,....600; not the original 66MHz P IIs that were in the
series 233, 266, (300?), 333. But I think that was a process change, not
a design change. The core voltage went down a bit. But the MSI 6905s
have their own VRM onboard and they drop the voltage to the right value.

John Dean