Setting Jumpers - TYAN TOMAHAWK BX Manual

1. Setting Jumpers

1-A. CPU Speed Settings (Jumpers JP10, JP11, JP12, JP13)
There are two steps to set the CPU speed. First, set the clock multiplier with
jumpers JP10 -13 according to the specification of your CPU using the chart
below. After the system is ready to boot up you will need to set the bus speed
! ! ! ! !
in the BIOS setup. This is covered in detail in Chapter 3 of this manual.
important!
Presently all Celeron CPUs use a 66MHz bus speed. Tyan does not recommend
operating CPUs, memory, or PCI Bus at higher than rated speed. Tyan takes no
responsibility for any problems related to overclocking any bus or component
on the system board.
Multiplier Bus Speed CPU speed
(set Jmprs
on board)
3.5
4
4.5
5
5.5
6
6.5
7
S1856 Tomahawk BX/A+
(set in
BIOS)
100 350
100 400
66 300
100 450
66 333
100 500
66 366
100 550
66 400
100 600
66 433
66 466
JP10 JP11
ON OFF
OFF ON
OFF ON
OFF OFF
OFF OFF
ON ON
ON ON
ON OFF
JP10, JP11,
JP12, JP13
15
JP12 JP13
OFF ON
ON ON
OFF ON
ON ON
OFF ON
ON OFF
OFF OFF
ON OFF