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1.7.2 Memory congurations
You may install 256 MB, 512 MB, 1 GB, and 2 GB unbuffered ECC / non-ECC DDR2 DIMMs
into the DIMM sockets.
• You may install varying memory sizes in Channel A and Channel B. The system maps
the total size of the lower-sized channel for the dual-channel conguration. Any excess
memory from the higher-sized channel is then mapped for single-channel operation.
• Always install DIMMs with the same CAS latency. For optimum compatibility, we
recommend that you obtain memory modules from the same vendor.
• Due to the memory address limitation on 32-bit Windows OS, when you install 4GB
or more memory on the motherboard, the actual usable memory for the OS can be
about 3GB or less. For effective use of memory, we recommend that you install a 64-bit
Windows OS when having 4GB or more memory installed on the motherboard.
The motherboard can support 8 GB physical memory on the operating system listed below.
You may install a maximum of 2 GB DIMMs on each slot.
64-bit
Windows
®
XP Professional x64 Edition
Windows
®
Vista x64 Edition
Recommended memory congurations
Mode Sockets
DIMM_A1 DIMM_B1 DIMM_A2 DIMM_B2
Single-Channel
– Populated – –
Populated – – –
Dual-channel (1) Populated Populated – –
Dual-channel (2) Populated Populated Populated Populated
Qualied Vendors Lists (QVL)
DDR2-533 MHz capability
Size Vendor Model CL Brand SS/
DS
Component DIMM support
A* B* C*
512MB Kingston KVR533D2N4/512 N/A Inneon SS HYB18T512800AF3733336550 · ·
512MB Samsung M378T6553BG0-CD5 4 Samsung SS K4T51083QB-GCD5 · ·
1G HY HYMP512U64CP8-C4 AB 4 Hynix DS HY5PS12821CFP-C4 · ·
512MB Micron MT 16HTF6464AG-53EB2 4 Micron DS D9BOM · ·
1G Corsair VS1GB533D2 N/A Corsair DS 64M8CFEGQIB0900718 · ·
512MB Elpida EBE51UD8ABFA-5C-E N/A Elpida SS E5108AB-5C-E · ·
512MB Transcend 512MB ECC N/A Micron SS 6ND22D9GCT(ECC) · ·
512MB ADATA M2OAD2G3H3166I1B52 N/A ADATA SS AD29608A8A-37DG20719 · ·
Chapter 1: Product introduction 1-11