Technical information

Processor Jumper Settings
Identifying the main board
Before setting the speed of the processor, it is necessary to identify the type of board which you are work-
ing on. An AMD K-6 or K6-2 should be using either the ASUS TXP4-X or P5A main boards. Intel Pentium II
computers may use one of five main boards (P2L97, P2B, P2B-F, P2-99, or P3B-F). Intel Celerons may use
any Slot 1 board (P2L97, P2B, P2B-F, P2-99, or P3B-F) though a slot one adapter is required on some
333MHz and higher processors. Pentium IIIs are restricted to 100MHz Slot 1 boards (P2B, P2B-F, P2-99, or
P3B-F). On all of the main boards the model is printed in white ink. It is generally easier to check the BIOS
information for the main board model and revision. Power on the computer and check in the lower left cor-
ner of the screen. There will be a string of characters on the last line and it should include either
“<TXP4X>”, “<<P5A>>”, “<P2L97>”, “<<P2B>>”, “<<P2B-F>>”, or “<<P2-99>>” in roughly the middle.
Identifying the AMD-K6 speed
There are two different types of AMD-K6 processors. To identify the difference, look at the top of the fan
over the processor. Some of the K6 processors will have a silver foil sticker in the center of the fan which is
located top of the processor which will have the speed and voltage settings printed on it. Others will not
have a silver sticker in the center of the fan. In this case the fan must be removed from the processor. On the
top of the processor, stamped in the metal plate, is the speed and voltage information. Once this information
has been obtained, make sure to secure the processor fan to the processor and verify that it is tight and can-
not be slipped or bumped off.
Identifying the Pentium II/III (Slot 1) speed
The Pentium II/III slot 1 processor is the least difficult to identify its speed. Look at the top of the proces-
sor (the edge facing out of the case) and look at the first line of the imprinted codes. There will be a space
about three-quarters of the way into the line. Look at the six numbers just before that space. The first three
indicate the speed, the last three indicate the cache size. Thus, a 333MHz processor’s first line could look like
this; “80523PX333512 SL2S5” while a 266MHz processor could look like this; “B80522P266512 SL2QB.”
Identifying the Pentium III (FPGA) speed
Later models of the Pentium III processor where shipped in a socket 370 configuration called “FPGA.”
Though no FPGA boards have been used in Sable systems to date, the FPGA processors are installed in to a
Slot 1 adapter card for installation in to the standard Slot 1 main boards. Identification of the processor speed
requires removal of this slot 1 adapter, and the processor fan. It is not recommended that you attempt this as
it can could serious problems with the heat dissipation of the processor (the thermal putty placed between
the heatsync and the processor will no be properly intact). Additionally, all of the Pentium III processors
have the locked multiplier prohibiting modification to the processor's operating speed. It is suggested that
Pentium III processors not be modified in the field. If there is a need to do so, contact a PCComplete techni-
cian for more information.
Identifying the Celeron (Slot 1) speed
The Slot 1 Celeron has shipped from PCComplete in one speed – 333MHz. If you do however need to
check the speed of the processor it is located on the back side of the card to the left side. It should have a
1
revision 0.2.8.7