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2-12 Chapter 2: Hardware information
2.4.2 Memory congurations
You may install 512 MB, 1 GB, and 2 GB unbuffered ECC and non-ECC DDR2
DIMMs into the DIMM sockets.
Recommended Memory Congurations
• You may install varying memory sizes in Channel A and Channel B. The
system maps the total size of the lower-sized channel for the dual-channel
conguration. Any excess memory from the higher-sized channel is then
mapped for single-channel operation.
• Always install DIMMs with the same CAS latency. For optimum
compatibility, it is recommended that you obtain memory modules from the
same vendor.
• When installing a total memory of 4GB capacity or more, Windows 32-bit
operation system may only recognize less than 3GB. Hence, a total
installed memory of less than 3GB is recommended.
• This motherboard does not support memory modules made up of 128 Mb
chips.
Mode
Sockets
DIMM_A1
(yellow)
DIMM_A2
(black)
DIMM_B1
(yellow)
DIMM_B2
(black)
Single-Channel
– – Populated –
Populated – – –
Dual-channel (1)
Populated – Populated –
Dual-channel (2)
Populated Populated Populated Populated
Due to OS limitation, this motherboard can only support up to 8 GB on the
operating systems listed below. You may install a maximum of 2 GB DIMMs on
each slot.
64-bit
Windows
®
XP Professional x64 Edition
Windows
®
Vista x64 Edition