User`s manual

BIOS
Page 4-6
4-3 Advanced Chipset Features
Choose the “ADVANCED CHIPSET FEATURES” option in the CMOS SETUP
UTILITY menu to display following menu.
Figure 4: Chipset Features Setup
DRAM Timing Selectable
For setting DRAM Timing, select By SPD to follow Intel PC DDR SDRAM Serial
Presence Detect Specification.
Options: Manual, By SPD.
CAS Latency Time
This item specifies the number of clock cycles needed after a Column Address Strobe
(CAS) signal before data can be read. The default is by DRAM SPD.
Options: 2, 2.5, 3.
Active to Precharge Delay
This item specifies the number of clock cycles needed after a bank active command
before a precharge can occur (sets the minimum RAS pulse width.). The default is by
DRAM SPD.
Options: 5, 6, 7, 8.