CPU's - where to buy older ones for P2B ?

  • Thread starter Thread starter Bob
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Bob

I need to upgrade some P2B's. What are some good sources for older
CPU's & slockets that work ?

For the majority that I'll just be reselling, I'd be thrilled with
some fast slot 1 CPU's or cheap 370 based at 500mhz or higher, with
some reasonably inexpensive but reliable slockets.

For a couple of them I'd like to get to 850 and use a slocket that
will be stable no matter what.

Thanks for any pointers,
 
Ebay for second user stuff...
For the ultimate upgrade go with one of the Tualatin Celerons up to 1.4GHz
with either a Powerleap or Upgradeware Slot-T adapter..The powerleap is
required on the Rev 1.02 and earlier boards, the Slot-T is ok on the later
models and is cheaper.
 
"BigBadger" said:
Ebay for second user stuff...
For the ultimate upgrade go with one of the Tualatin Celerons up to 1.4GHz
with either a Powerleap or Upgradeware Slot-T adapter..The powerleap is
required on the Rev 1.02 and earlier boards, the Slot-T is ok on the later
models and is cheaper.
Click to expand...

The last time I looked, the really interesting processors were "way
expensive". The end result, is that the Powerleap PL-iP3/T, which comes
with a processor installed in it, is now one of the cheaper retail
solutions. Since the FSB is 100MHz, your options are to try a 1400/100/256KB
processor and live with 100MHz, or buy a lower speed processor
(like the 1000/100/256KB) and overclock the FSB a bit. Some CAS2 memory
with speed consistent with your choice of FSB will perk up the performance
a bit as well.

http://www.powerleap.com/

1400/100/256KB plus PL-iP3/T $119.95
1000/100/256KB plus PL-iP3/T $ 99.95

There may be some other choices, but I think even the people on Ebay
realize the value of solutions that work in 440BX boards, and they
expect to get a fair chunk of cash for an old processor.

The reason I recommend the Powerleap for any version of board,
is the difficulty of finding Tualatin processors at retail. They seem
to be sold out of retail, but maybe there are some hoarded at places
other than Powerleap.

HTH,
Paul
 
Ebay for second user stuff...
For the ultimate upgrade go with one of the Tualatin Celerons up to 1.4GHz
with either a Powerleap or Upgradeware Slot-T adapter..The powerleap is
required on the Rev 1.02 and earlier boards, the Slot-T is ok on the later
models and is cheaper.
Click to expand...


DO I understand correctly that the later boards (e.g. 1.10) can do the
proper voltages without a more expensive slocket or is there another
issue here too ?

Thanks,
 
-
*****Replace 'NOSPAM' with 'btinternet' in the reply address*****
Bob said:
DO I understand correctly that the later boards (e.g. 1.10) can do the
proper voltages without a more expensive slocket or is there another
issue here too ?

Thanks,
Click to expand...

Yep...you understand it correctly. The later versions can supply the correct
(1.45V) voltage so will work with the cheaper Upgradeware Slot-T adapter
that does not have an onboard voltage regulator. The earlier revisions are
limited to 1.8V minimum so need the add on voltage regulator that's included
in the Powerleap adapter.
 
Bob said:
I need to upgrade some P2B's. What are some good sources for older
CPU's & slockets that work ?

For the majority that I'll just be reselling, I'd be thrilled with
some fast slot 1 CPU's or cheap 370 based at 500mhz or higher, with
some reasonably inexpensive but reliable slockets.

For a couple of them I'd like to get to 850 and use a slocket that
will be stable no matter what.

Thanks for any pointers,
Click to expand...

A couple of points worth adding to previous posts:

If there's a local computer buy'n'sell newsgroup, processors are usually
cheaper than on eBay, especially if you can avoid shipping charges.
Socket 370 processors are more common and often cheaper than Slot-1 even
after adding the requisite adapter.

The Slot-T is a very reliable and inexpensive adapter, and can run both
Coppermine and Tualatin processors. You can run any 100Mhz Coppermine on
any revision P2B using the Slot-T, with voltage jumpers set to 1.8v
where necessary. A few rev 1.10 boards have Tualatin capable voltage
regulators, most not, while all rev 1.12 and up are Tualatin capable.

Late revision boards have 4 FSB jumpers and an ICS9250-08 clock chip,
and are 133Mhz FSB/33Mhz PCI capable, as are older boards with 3 jumpers
and an ICS9148-26 clock chip. Boards with ICS9150-08 clocks are limited
to 112Mhz FSB. Those three are the most common clock chips - others were
used but in general do not support 133Mhz FSB, or overclock the PCI bus
to 44Mhz when set to 133. All 440BX-based boards overclock the AGP bus
to 89Mhz at 133Mhz FSB, but most video cards will tolerate the
overclock, especially those with nVidia chipsets.

The Slot-T adapters are stable up to (at least) 150Mhz FSB - so a 133Mhz
FSB processor and PC133 ram is a good choice for boards with the right
clock chip, as ram throughput becomes the bottleneck on P2Bs with fast
processors.

I recommend updating the BIOS to 1014beta3 on all boards to maximise
processor and large disk support. This BIOS is required prior to a
Tualatin upgrade.

I've posted benchmarks for Tualatins at various processor and FSB speeds
on my P2B modification site, but there's nothing for Coppermines as I
didn't have any available - perhaps you'd be good enough to help fill in
the gaps as you upgrade your boards? :-)

HTH

P2B

http://tipperlinne.com/p2bmod
 
I've posted benchmarks for Tualatins at various processor and FSB speeds
on my P2B modification site, but there's nothing for Coppermines as I
didn't have any available - perhaps you'd be good enough to help fill in
the gaps as you upgrade your boards? :-)
Click to expand...


Thanks for all the info, great stuff. After some reading, I'll do some
ordering, and maybe even some benchmarking :-)
 
I've run LOTS of these with Celeron 800's and 850's, socket 370 using a
slocket. Be sure to use a slocket with VID jumpers (see my immediately
previous post).

Note that the 533A chip, run with a 100 MHz FSB (it was nominally a
66MHz chip), becomes an 800 MHz CPU, and the 566 becomes an 850. The
key here is that it MUST be a Coppermine based 533A (has "flip chip"
package) and not an earlier (Deschutes?) 533, and you will probably need
to raise the voltage (1.8 to 1.9 volts). All 566's are Coppermine based
chips.
 
Barry said:
I've run LOTS of these with Celeron 800's and 850's, socket 370 using a
slocket. Be sure to use a slocket with VID jumpers (see my immediately
previous post).
Click to expand...

Agreed - but beware el-cheapo slot adapters with no voltage clamps. The
CMOS i/o signals are 2.0v on Slot-1 processors and 1.5v on S370
processors - cheap adapters omit the TVC16222A chip used to adapt the
signal voltages, potentially damaging the processor in time.
 
Trying to follow this through... If I look at the Intel Processor
Spec page, there are (4) 566 Celerons.

SL46T 566.00 MHz 66 MHz 0.18 micron cB0 128 KB 370 pin PPGA
SL3W7 566.00 MHz 66 MHz 0.18 micron cB0 128K FC-PGA
SL4NW 566.00 MHz 66 MHz 0.18 micron cC0 128 KB 370 pin PPGA
SL4PC 566.00 MHz 66 MHz 0.18 micron cC0 128K FC-PGA

Will all of these work ? The first cB0 show as 1.5v, the second
two cC0 show as 1.7volt. Is it critical to get the 1.7v or will
the proper slocket handle the 1.5v processor ?
 
Bob said:
Trying to follow this through... If I look at the Intel Processor
Spec page, there are (4) 566 Celerons.

SL46T 566.00 MHz 66 MHz 0.18 micron cB0 128 KB 370 pin PPGA
SL3W7 566.00 MHz 66 MHz 0.18 micron cB0 128K FC-PGA
SL4NW 566.00 MHz 66 MHz 0.18 micron cC0 128 KB 370 pin PPGA
SL4PC 566.00 MHz 66 MHz 0.18 micron cC0 128K FC-PGA

Will all of these work ? The first cB0 show as 1.5v, the second
two cC0 show as 1.7volt. Is it critical to get the 1.7v or will
the proper slocket handle the 1.5v processor ?
Click to expand...

Yes, all will work. All of the them are fc-pga, intel messed up the
tables a bit some time ago. intel used different voltages with the cB0
steppings, so the low-speed grade 566 only required 1.5V, the high-speed
grade ones used a higher voltage. It's only a specification difference,
if you want to overclock you need a slocket with voltage adjustment
jumpers anyway, and using 1.8V (or something like that) isn't more
dangerous to the 1.5V cB0 Celeron than to the 1.7V cC0 Celeron. The cC0
stepping should be a better overclocker though (later steppings almost
always reach higher clocks).
(for the record, my 566 cB0 (1.5V listed) Celeron required 1.9V to be
really stable at 850Mhz.)
 
Yes, all will work. All of the them are fc-pga, intel messed up the
tables a bit some time ago. intel used different voltages with the cB0
steppings, so the low-speed grade 566 only required 1.5V, the high-speed
grade ones used a higher voltage. It's only a specification difference,
if you want to overclock you need a slocket with voltage adjustment
jumpers anyway, and using 1.8V (or something like that) isn't more
dangerous to the 1.5V cB0 Celeron than to the 1.7V cC0 Celeron. The cC0
stepping should be a better overclocker though (later steppings almost
always reach higher clocks).
(for the record, my 566 cB0 (1.5V listed) Celeron required 1.9V to be
really stable at 850Mhz.)
Click to expand...

OK... sounds good. If I decide to runs some 1.5v 566's at the standard
clock speed, do I still need the better (voltage adjustable) slocket
or can I just let a P2B 1.10 or higher board take care of it ?

ALso, how about running an 850 celeron/SL54Q ? The intel spec's say it
wants 1.25 to 1.525v... could I run one of these on a later P2b with
the bus cranked to 112 to get a 950 out of it (and keep it stable) ?

Thanks,
 
Bob said:
OK... sounds good. If I decide to runs some 1.5v 566's at the standard
clock speed, do I still need the better (voltage adjustable) slocket
or can I just let a P2B 1.10 or higher board take care of it ?
Click to expand...

Adjustable voltage is unlikely to be an issue - AFAIK all adapters with
voltage clamp chips also have adjustable voltage, and as I posted
previously cheap adapters without voltage clamps are a poor choice.
ALso, how about running an 850 celeron/SL54Q ? The intel spec's say it
wants 1.25 to 1.525v... could I run one of these on a later P2b with
the bus cranked to 112 to get a 950 out of it (and keep it stable) ?
Click to expand...

The voltage specification for the SL54Q is almost certainly an error -
note that all the other 850Mhz cD0 stepping Celerons are listed as
1.75v. These would be a reasonable choice for the *older* revision
boards that cannot do more than 112Mhz FSB as 950Mhz @ 1.8v is almost
guaranteed to be stable.
 
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