2.5Installing a DIMM

The system motherboard comes with four Double Data Rate 2 (DDR2) Dual Inline Memory Module (DIMM) sockets.

A DDR2 module has the same physical dimensions as a DDR DIMM but has a 240-pin footprint compared to the 184-pin DDR DIMM. DDR2 DIMMs are notched differently to prevent installation on a DDR DIMM socket.

The figure illustrates the location of the DDR2 DIMM sockets.

 

Pins

DIMM A1

DIMM A2

DIMM B1

DIMM B2

-VM

112

 

 

 

 

P5B

 

 

 

 

 

 

128 Pins

 

 

 

 

P5B-VM 240-pin DDR2 DIMM socket

Channel

Sockets

Channel A

DIMM_A1 and DIMM_A2

Channel B

DIMM_B1 and DIMM_B2

2.5.1Memory configurations

You may install up to 8 GB system memory using 256 MB, 512 MB, 1 GB, and 2 GB DDR2 DIMMs.

•Installing DDR2 DIMMS other than the recommended configurations may cause memory sizing error or system boot failure. Use any of the recommended configurations in the table on the next page.

•Install only identical (the same type and size) DDR2 DIMM in DIMM_A and

DIMM_B.

•Always install DIMMs with the same CAS latency. For optimum compatibility, we recommend that you obtain memory modules from the same vendor.

•Due to chipset resource allocation, the system may detect less than 4 GB system memory when you installed four 1 GB DDR2 memory.

•This motherboard does not support memory modules made up of 128 MB chips or double-sided x16 memory modules.

ASUS Pundit P3-PH5

2-