User`s manual

AIMB-542 1-15

1.7 System memory

1.7.1 Overview

The motherboard comes with four 184-pin Double Data Rate (DDR) Dual Inline

Memory Modules (DIMM) sockets.

The following ﬁgure illustrates the location of the sockets:

• If you installed four 1 GB memory modules, the system may detect less

than 3 GB of total memory because of address space allocation for

other critical functions. This limitation applies to Windows

XP 32-bit

version operating system since it does not support Physical Address

Extension(PAE)

• Installing DDR DIMMs other than the recommended conﬁgurations

may cause memory sizing error or system boot failure. Use any of the

recommended conﬁgurations in Table 1.

• In dual-channel conﬁgurations, install only

identical (the same type and

size) DDR DIMM pairs for each channel.

• Always install DIMMs with the same CAS latency. For optimum

compatability, it is recommended that you obtain memory modules from the

same vendor.

• DIMMs installed into

any three sockets will function in single-channel mode.

1.7.2 Memory confi gur ati ons

You may install 64MB,128 MB, 256 MB, 512 MB, and 1 GB DDR DIMMs into the

DIMM sockets using the memory conﬁguration in this section.

184-pin DDR DIMM sockets

DIMM_A2

DIMM_A1

DIMM_B2

DIMM_B1