Acer 4400 User Guide
51
NOTE: The value in the Setup CPU Speed parameter may differ from the
value in the CPU Speed Detected parameter. However, the actual running
CPU speed shown is always the value in the CPU Speed Detected parameter.
value in the CPU Speed Detected parameter. However, the actual running
CPU speed shown is always the value in the CPU Speed Detected parameter.
DRAM Clock Table
Clock Spread Spectrum
This item is used to set the clock
spread spectrum for EMI testing.
Normally, you don’t need to change
the default setting.
spread spectrum for EMI testing.
Normally, you don’t need to change
the default setting.
On
Off
CPU Speed Detected
This motherboard can detect the
CPU speed automatically and shows
it in on this entry.
CPU speed automatically and shows
it in on this entry.
CPU Clock Frequency
This item lets you set the external
clock (bus clock). The correct
setting may vary depending on your
particular CPU. Refer to your CPU
specifications for more details.
clock (bus clock). The correct
setting may vary depending on your
particular CPU. Refer to your CPU
specifications for more details.
66.8 MHz
100 MHz
133 MHz
CPU Clock Ratio
The Intel Pentium III is designed to
have a different Internal (Core) and
External (Bus) frequency. This item
lets you select the ratio of Core/Bus
frequency.
have a different Internal (Core) and
External (Bus) frequency. This item
lets you select the ratio of Core/Bus
frequency.
1.5, 2.0, 2.5,
3.0, 3.5, 4.0,
4.5, 5.0, 5.5,
6.0, 6.5, 7.0,
7.5, and 8.0
3.0, 3.5, 4.0,
4.5, 5.0, 5.5,
6.0, 6.5, 7.0,
7.5, and 8.0
Setup CPU Speed
The CPU Speed is derived from the
product of "CPU Clock Frequency"
and "CPU Clock Ratio".
product of "CPU Clock Frequency"
and "CPU Clock Ratio".
CPU
SDRAM
Recommended Setting
133 MHz
PC133
CPU CLK
133 MHz
PC100
CPU CLK-33M
100 MHz
PC133
CPU CLK+33M
Parameter
Description
Options
Ap4400-e.book Page 51 Friday, October 1, 1999 2:09 PM