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2.4
System memory
2.4.1
Overview
The motherboard comes with 2G onboard memory. It saves you money and trouble
buying memory modules.
The figure illustrates the location of the onboard memory:
DSBF-DM Series Onboard Memory
For an even better performance, this motherboard also features six fully-buffered
DIMM (FB-DIMM) sockets to support 240-pin FB-DIMM modules. You can
purchase extra FB-DIMM modules based on your needs. An FB-DIMM module has
a different pin-out from DDR2 DIMMs so you cannot install DDR2 DIMMs on an
FB-DIMM socket. Note that an FB-DIMM socket has an Advanced Memory Buffer
(AMB) chip that allows memory-to-CPU connection at gigabit speed.
The figure illustrates the location of the FB-DIMM sockets:
DSBF-DM Series 240-pin FB-DIMM sockets
Note that the orientation of DIMM_11 socket is different from the others. Be
careful when installing FB-DIMM to this socket.
2-16
®
®
128 Pins
112 Pins
Chapter 2: Hardware information
FB-DIMM_11
FB-DIMM_01
FB-DIMM_20
FB-DIMM_21
FB-DIMM_30
FB-DIMM_31
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