Asus M3A78 PRO, User Manual

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ASUS M3A78 PRO 1-15
1.7.2 Memory configurations
You may install 512 MB, 1 GB, and 2 GB unbuffered ECC/non-ECC DDR2 DIMMs
into the DIMM sockets.
1.7 System memory
1.7.1 Overview
The motherboard comes with four Double Data Rate 2 (DDR2) Dual Inline Memory
Modules (DIMM) sockets.
A DDR2 module has the same physical dimensions as a DDR DIMM but has a
240-pin footprint compared to the 184-pin DDR DIMM. DDR2 DIMMs are notched
differently to prevent installation on a DDR DIMM socket.
The figure illustrates the location of the DDR2 DIMM sockets:
Channel Sockets
Channel A DIMM_A1 and DIMM_A2
Channel B DIMM_B1 and DIMM_B2
Recommended memory configurations
Mode
Sockets
DIMM_A1 DIMM_A2 DIMM_B1 DIMM_B2
Single-Channel
Populated — — —
— — Populated —
Dual-channel (1) Populated — Populated —
Dual-channel (2) Populated Populated Populated Populated