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2.5
Installing 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.
P5B-VM 240-pin DDR2 DIMM socket
Channel
Channel A
Channel B
2.5.1
Memory configurations
You may install up to 8 GB system memory using 256 MB, 512 MB, 1 GB, and 2
GB DDR2 DIMMs.
•
•
•
•
•
2-10
Sockets
DIMM_A1 and DIMM_A2
DIMM_B1 and DIMM_B2
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.
Chapter 2: Basic installation
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