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S1857 Trinity 371
17
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.
Presently all Celeron CPUs use a 66MHz bus speed. (Tyan does not recom-
mend 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.)
!
important!
Multiplier Bus Speed
(set Jmprs
on board)
(set in
BIOS)
100 350
133* 466
100 400
133* 533
66 300
100 450
133* 600
66 333
100 500
133* 667
66 366
100 550
133* 733
66 400
100 600
133* 800
66 433
100 650
133* 800
66 466
100 700
133* 933
ON OFF ON OFF
ON ON OFF OFF
ON ON ON OFF
OFF OFF OFF ON
OFF OFF ON ON
OFF ON OFF ON
JP13
OFF ON ON ON
ON OFF OFF ON
CPU speed JP10 JP11 JP12
3.5
4
4.5
5
5.5
6
6.5
7
* The VIA chipset versions bus speed is Auto-Determined by the CPU. The BX
version can support 133Mhz by overclocking
the chipset but it is not recommended by
Intel
TM
and Tyan.
Currently S1857 does not support some
older Slot 1, 66Mhz bus Pentium IIs
that use a 2.8 core voltage. Please refer
to the link on page 26 for the most
updated information on CPU support
for the Trinity 371.
JP10, JP11,
JP12, JP13
INSTALL