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2
Hardware Installation
2.5 Jumper Settings for SDRAM Clock (DIMM)
Jumper JP2
SDRAM Clock
JP2 is used to set the SDRAMs
clock according to the CPU
clock or AGP clock. If you are
using PC SDRAM DIMMs, it is
recommended that you set the
SDRAM clock according to the
CPU clock (2-3 On). This setting
will provide better system
performance specially when used
with 75/83/95/100MHz
processors. However, if you
encounter compatibility problems
with PC-100 SDRAM DIMMs or you are using EDO/PC-66
SDRAM DIMMs, set the SDRAM clock according to the AGP clock
(1-2 On).
2-3 On:
SDRAM CLK = CPU CLK
1-2 On:
SDRAM CLK = AGP CLK
(default)
CPU CLK
60MHz
66MHz
75MHz
83MHz
95MHz
100MHz
SDRAM CLK
60MHz
66MHz
60MHz
66MHz
66MHz
66MHz
AGP CLK
60MHz
66MHz
60MHz
66MHz
66MHz
66MHz
CPU CLK
60MHz
66MHz
75MHz
83MHz
95MHz
100MHz
SDRAM CLK
60MHz
66MHz
75MHz
83MHz
95MHz
100MHz
AGP CLK
60MHz
66MHz
60MHz
66MHz
66MHz
66MHz
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