ASROCK 775i915P-SATA2 Datasheet download pdf (Page 31)

3131

3.3.23.3.2

3.3.2

Chipset ConfigurationChipset Configuration

Chipset Configuration

DRAM Frequency

If [Auto] is selected, the motherboard will detect the memory module(s)

inserted and assigns appropriate frequency automatically. You may also

select other value as operating frequency: [166MHz (DDR 333)], [200MHz

(DDR 400)]. If DDRII DIMM is inserted to DDRII slot, you may select [200MHz

(DDRII 400)], [266MHz (DDRII 533)] as operating frequency.

Flexibility Option

The default value of this option is [Disabled]. It will allow better tolerance for

memory compatibility when it is set to [Enabled].

Configure DRAM Timing by SPD

Select [Enabled] will configure the following items by the contents in the

SPD (Serial Presence Detect) device. If you select [Disabled], you will find

the items “DRAM RAS# to CAS# Delay”, “DRAM RAS# Precharge”, and

“DRAM RAS# Activate to Precharge” appear to allow you adjusting them.

DRAM CAS# Latency

Use this item to adjust the means of memory accessing. For DDR DIMM:

Configuration options are [3], [2.5], [2], and [Auto]. For DDRII DIMM:

Configuration options are [5], [4], [3], and [Auto].

DRAM RAS# to CAS# Delay

This controls the latency between the DRAM active command and the

read / write command. Configuration options: [2 DRAM Clocks], [3 DRAM

Clocks], [4 DRAM Clocks], and [5 DRAM Clocks].

DRAM RAS# Precharge

This controls the idle clocks after a precharge command is issued.

Configuration options: [2 DRAM Clocks], [3 DRAM Clocks], [4 DRAM

Clocks], and [5 DRAM Clocks].

DRAM RAS# Activate to Precharge

This controls the number of DRAM clocks for TRAS. Configuration

options: [4 DRAM Clocks], [5 DRAM Clocks], [6 DRAM Clocks], [7 DRAM

BIOS SETUP UTILITY

Chipset Configuration

DRAM Frequency

Flexibility Option

Configure DRAM Timing by SPD

DRAM CAS# Latency

Boot Graphic Adapter Priority

OnBoard LAN

OnBoard AC'97 Audio

VCCM

VDDQ

[Disabled]

[Enabled]

[Auto]

[PCIE/PCI]

[Enabled]

[Auto]

[Low]

[Auto]

Select Screen

Select Item

+ - Change Option

F1 General Help

F10 Save and Exit

ESC Exit

F9 Load Defaults

Options

166MHz (DDR333)

200MHz (DDR400)

Auto

Advanced

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ASROCK 775i915P-SATA2 Datasheet Page 31

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