Asus AP1720-E1 - Manual (Page 80)

4-12 Chapter 4: BIOS Setup
CPU Clock [100MHz]
This item allows you to set the CPU frequency. To do so, highlight the item
then press Enter to display a pop-up menu. Key-in a value from the
specified range, then press Enter. Configuration options: [Min=100]
[Max=165]
CPU Clock Ratio
This item sets the ratio between the CPU core clock and the FSB
frequency.
Configuration options:
For 533MHz FSB CPUs: [Min=12] [Max=26]
For 400MHz FSB CPUs: [Min=16] [Max=26]
DRAM Frequency [Auto]
This item sets the DRAM operating frequency. Configuration options:
[DDR266] [DDR333] [Auto]
Memory Timing Selectable [By SPD]
The DRAM clock are set according to the DRAM SPD (Serial Presence
Detect). Select [By SPD] for automatic DRAM clock detection. Select
[Manual] to allow setting the succeeding memory items to optimal timings.
Configuration options: [By SPD] [Manual]
CAS Latency Time [2]
This item sets the latency (in clocks) between the DRAM read command
and the time the data actually becomes available. Configuration options:
[2] [2.5] [3]
Active to Precharge Delay [6]
This item controls the number of DRAM clocks used for DRAM
parameters. Configuration options: [8] [7] [6] [5]
DRAM RAS# to CAS# Delay [3]
This item controls the latency between the DRAM active command and the
read/write command. Configuration options: [4] [3] [2]
The items CAS Latency Time, Active to Precharge Delay, DRAM RAS#
to CAS# Delay, and DRAM RAS# Precharge are configurable only
when the Memory Timing Selectable item is set to [Manual].