Asus P5SD2-X SE Motherboard Installation Guide - Page 27
System memory
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1.7 System memory 1.7.1 Overview The motherboard comes with four 240-pin Double Data Rate 2 (DDR2) Dual Inline Memory Modules (DIMM) sockets. The following figure illustrates the location of the sockets: P5SD2-X SE DIMM_A1 DIMM_A2 DIMM_B1 DIMM_B2 ® P5SD2-X SE 240-pin DDR2 DIMM Sockets 1.7.2 Memory Configurations You may install 256 MB, 512 MB and 1 GB unbuffered non-ECC DDR DIMMs into the DIMM sockets using the memory configurations in this section. • 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. • Due to chipset limitation, this motherboard supports a maximum of 4GB total memory and four (4) ranks per memory channel only. A warning message appears during POST if the total density of memory modules installed exceeds the chipset capacity. Excess memory will not be utilized by the system. • Always install DIMMs with the same CAS latency. For optimum compatibility, it is recommended that you obtain memory modules from the same vendor. • Due to chipset limitation, DIMM modules with 128 Mb memory chips or double-sided x16 memory chips are not supported in this motherboard. • Use only qualified DIMMs modules on this motherboard. Visit the ASUS website (www.asus.com) for the latest DDR2 Qualified Vendors List (QVL). ASUS P5SD2-X SE 1-15