Asus P5BV/SAS - Manual (Page 32)

2-12 Chapter 2: Hardware information
2.4 System memory
2.4.1 Overview
The motherboard comes with four Double Data Rate 2 (DDR2) Dual Inline Memory
Modules (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:
2.4.2 Memory configurations
You may install 256 MB, 512 MB, 1 GB, and 2 GB unbuffered ECC or non-ECC
DDR2-667 / 800 DIMMs into the DIMM sockets.
• Always install DIMMs with the same CAS latency. For optimum
compatibility, we recommend that you obtain memory modules from the
same vendor. Refer to the DDR2 Qualified Vendors List on the ASUS web
site.
• When installing one or two DIMMs, install the DIMM(s) to the blue slots
(DIMM_A2 / DIMM_B2).
• Three DDR2 DIMMs installed into any three memory sockets will function in
Dual-Channel Asymmetric mode.
®
P5BV
P5BV 240-pin DDR2 DIMM Sockets
DIMM_A2
DIMM_B1
DIMM_B2
DIMM_A1
112 Pins 128 Pins