Asus PK5C DRAM Frequency [Auto], DRAM Timing Control [Auto], (For DDR3 DIMMs), (For DDR2 DIMMs)

DRAM Frequency [Auto]

Allows you to set the DDR2/DDR3 operating frequency. The configuration options vary depending on the DIMMs you install on the motherboard.

(For DDR3 DIMMs) Configuration options: [Auto] [DDR3-800MHz] [DDR3-833MHz] [DDR3-1000MHz] [DDR3-1066MHz] [DDR3-1111MHz] [DDR3-1333MHz]

(For DDR2 DIMMs) Configuration options: [Auto] [DDR2-667MHz] [DDR2-800MHz] [DDR2-889MHz] [DDR2-1066MHz]

Selecting a very high DRAM frequency may cause the system to become unstable! If this happens, revert to the default setting.

DRAM Timing Control [Auto]

Configuration options: [Auto] [Manual]

• The following sub-items apprear only when you set the DRAM Timing Control item to [Manual].

•The configuration options for some of the following items vary depending on the DIMMs you install on the motherboard.

CAS# Latency [6]

Configuration options: [3]~[6]

RAS# to CAS# Delay [5 DRAM Clocks]

Configuration options: [3 DRAM Clocks]~[10 DRAM Clocks]

RAS# Precharge [5 DRAM Clocks]

Configuration options: [3 DRAM Clocks]~[10 DRAM Clocks]

RAS# Activate to Precharge [15 DRAM Clocks]

Configuration options: [3 DRAM Clocks]~[34 DRAM Clocks]

TWR [Auto]

Configuration options: [Auto] [1 DRAM Clocks]~[15 DRAM Clocks]

TRFC [Auto]

Configuration options: [Auto] [20 DRAM Clocks] [25 DRAM Clocks] [30 DRAM Clocks] [35 DRAM Clocks] [42 DRAM Clocks]

TWTR [Auto]

Configuration options: [Auto] [1 DRAM Clocks]~[15 DRAM Clocks]

TRRD [Auto]

Configuration options: [Auto] [1 DRAM Clocks]~[15 DRAM Clocks]

TRTP [Auto]

Configuration options: [Auto] [1 DRAM Clocks]~[15 DRAM Clocks]

4-18 Chapter 4: BIOS setup