Asus RS260-E4 RX8 Service Guide - Page 31
System memory
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2.3 System memory The motherboard comes with 12 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-D12/2U/SAS 240-pin FB-DIMM sockets FB-DIMM_12 FB-DIMM_11 FB-DIMM_10 FB-DIMM_02 FB-DIMM_01 FB-DIMM_00 FB-DIMM_20 FB-DIMM_21 FB-DIMM_22 FB-DIMM_30 FB-DIMM_31 FB-DIMM_32 2.3.1 Memory configurations You may install 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 or double-rank 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 RS260-E4/RX8 2-11
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