A Big Fat Slob wrote:
> Paul <nospam@needed.com> wrote in news:ff63t0$smv$1@aioe.org:
>
>> A Big Fat Slob wrote:
>>> How do I determine if there are any updates available for my
>>> processor? I don't see Pentium III listed on Intel's web site.
>> You mean, like, the processorfinder site ? It still has a Pentium III
>> section. If you mention what your motherboard make and model is,
>> someone might even suggest what the limit is.
>>
>> http://processorfinder.intel.com/Lis...Spec=&OrdCode=
>>
>> Paul
>>
>
> Thanks for the link.
>
> FreshDiagnose tells me my motherboard's vendor is Intel. The model number
> is SE440BX-2. I want to know if there are any updates available that'll
> improve my processor's performance.
Supported processor list is here.
http://www.intel.com/support/motherb.../cs-013634.htm
First thing I notice, is the official list is FSB100. No FSB133
processors in there.
The picture here shows it takes slot processors, not the S370 socketed
ones.
http://www.intel.com/support/motherb.../cs-013637.htm
Now, the next thing I notice, is the list of supported processors, has
a note in the right hand column. 754552-200, 754558-200, or A01450-200.
Look for a bar code sticker on the motherboard, which should be similar
in format to the one shown in the following picture. Typically, it means
a change was made to the parts list used to assemble the board. In this
particular case, it would mean a change to the Vcore regulator chip. Check
your motherboard, to see if it has one of those three numbers listed above.
http://support.intel.com/support/mot...mg/barcode.jpg
There are two kinds of voltage regulator chips. The older type, puts out
1.8V or higher voltages. The newer type, handles voltages as low as 1.5V.
Some of the higher speed processors, use lower voltages. For example,
this 850MHz/FSB100/256KB L2 Coppermine processor, uses 1.65V. Only the
three "AA" numbered SE440BX-2 motherboards above, would handle that
processor, due to its 1.65V power requirement.
http://processorfinder.intel.com/det...px?sSpec=SL43F
If you had an older motherboard, without one of the above AA numbers,
you could still plug in that SL43F 850MHz processor, but what would
happen is the computer would not POST. For safely reasons, when the
older Vcore regulator is asked for a voltage which is less than 1.8V,
it puts out zero volts instead. That protects the processor, but
also guarantees that the board cannot start.
Finally, there are "slotket" or slot adapter modules, which will
take a later S370 processor and run it. For example, I have a
1.4GHz/FSB100/256KB Tualatin Celeron processor, and I fit it
in a $25 adapter slocket, so it will fit my old 440BX motherboard.
The reason I can do that, is my Vcore regulator goes down to 1.5V,
so there is no problem using an adapter.
When a motherboard doesn't have the right Vcore regulator, another
possibility is the Powerleap iP3-T. It has an onboard regulator,
to make 1.5V. This particular one is bundled with a 1.4GHz/FSB100
processor. I don't think Powerleap is making these any more, so
Ebay would be the place to look.
http://cgi.ebay.com/POWERLEAP-PL-IP3...QQcmdZViewItem
The Powerleap "configurator" no longer lists any iP3-T adapters
as being for sale, so I guess Powerleap has stopped making them.
There is a note, that says you need Intel BIOS P13 or later,
to use the Powerleap adapter. The reason for the BIOS dependency,
is certain multiplier values of processor, didn't work properly
in the BIOS of the day. Eventually, a few manufacturers issued
BIOS updates, that fixed the multiplier issue. So presumably,
what Powerleap is saying, is they believe Intel fixed the issue
in the P13 BIOS.
To review your options:
1) SE440BX-2 motherboard with old Vcore regulator:
600MHz/FSB100/512KB Katmai 0.25u processor would be the fastest.
or use Powerleap iP3-T and take a chance on the BIOS being OK.
The Powerleap has its own Vcore regulator, which is why it will work.
I see there are a couple 600MHz 0.18u processors, which maybe
Intel didn't consider, and those would not work (Vcore needed is
too low). If buying a 600MHz, check the stepping of the processor
before you buy. (In the Processorfinder table, K=Katmai, C=Coppermine,
T=Tualatin.)
2) SE440BX-2 motherboard with new Vcore regulator
850MHz/FSB100/256KB Coppermine 0.18u slot processor (1.65V Vcore is one
of those lower voltages, but as long as the AA number is one of the
"chosen few", it'll work).
Or use the Powerleap solution, for a Tualatin Celeron processor
up to 1.4GHz/FSB100, using P13 BIOS or higher.
Or use one of the $25 slockets and a Coppermine S370 processor up
to 1GHz. The following link is an example of an S370 processor at 1GHz.
This example uses 1.75V (just slightly less than 1.8V) and a cheap
Coppermine capable slocket plus one of the "chosen few" SE440BX-2
motherboards, could use this.
http://processorfinder.intel.com/det...px?sSpec=SL5QV
Is this stuff confusing ? You betcha. I've done three upgrades on
my 440BX Asus motherboard, and all of them worked. I unsoldered
my "old" Vcore regulator chip, and replaced it with a pin
compatible "new" Vcore regulator. Which is why I had more upgrade
options later in life. My board started life at 300Mhz Celeron,
overclocked to 450MHz, and ended up with a 1.1GHz and a 1.4GHz
ualatin Celeron in an Upgradeware Slot-T cheap adapter. The only
way things could have been better, is if I unsoldered the clockgen
chip and improved it as well. But you gotta stop somewhere, and
move on.
So that will give you some general ideas. Post back if you want
to verify a product, before you buy it. Your next move, is to
look for that barcode sticker :-)
Paul