2.4System memory

2.4.1Overview

The motherboard comes with eight fully-buffered DIMM (FB-DIMM) sockets to support 240-pin FB-DIMM modules. 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:

128 Pins

 

112 Pins

DSBF-DE Series 240-pin FB-DIMM sockets

FB-DIMM_31 FB-DIMM_30 FB-DIMM_21 FB-DIMM_20 FB-DIMM_11 FB-DIMM_10 FB-DIMM_01 FB-DIMM_00

2.4.2Memory configurations

You may install 256 MB, 512 MB, 1 GB, 2 GB, and 4 GB registered ECC FB‑DIMMs into the DIMM sockets.

•For optimum compatibility, we recommend that you obtain memory modules

from the same vendor. Refer to the Qualified Vendors List on the ASUS web site.

•This motherboard does not support memory modules made up of 128 Mb chips x16 memory modules.

•If you are installing only one memory module, install into the white socket labeled DIMM_00. Installing into any other socket will not work.

ASUS DSBF-DE Series

2-15