Abit AT7, AT7E 2-3.Installing System Memory

2-6 Chapter 2

2-3. Installing System Memory

This motherboard provides four 184-pin DDR DIMM sites for memory expansion. The DDR SDRAM DIMM sockets support 8 M x 64 (64 MB), 16M x 64 (128 MB), 32 M x 64 (256 MB), 64 M x 64 (512 MB) and 128 M x 64 (1024 MB) or double density DDR SDRAM DIMM modules. Minimum memory is 64 MB and the maximum memory is 3 GB (Unbuffered, PC 1600 and PC 2100) / 2GB (Unbuffered, PC 2700) or 3.5 GB (Registered, PC 1600 and PC 2100) / 3 GB (Registered, PC 2700) DDR SDRAM. There are four memory module sockets on the system board (for a total of eight banks). In order to create a memory array, following rules must be followed.

!Supports single and double density DDR DIMMs.

Table 2-1. Valid Memory Configurations

Bank		Memory Module	Total Memory
Bank 0, 1		64 MB, 128 MB, 256 MB,	64 MB ~ 1 GB
(DDR DIMM1)		512 MB, 1024 MB
Bank 2, 3		64 MB, 128 MB, 256 MB,	64 MB ~ 1 GB
(DDR DIMM2)		512 MB, 1024 MB
Bank 4, 5		64 MB, 128 MB, 256 MB,	64 MB ~ 1 GB
(DDR DIMM3)		512 MB, 1024 MB
Bank 6, 7		64 MB, 128 MB, 256 MB,	64 MB ~ 1 GB
(DDR DIMM4)		512 MB, 1024 MB
Total System Memory for Unbuffered DDR DIMM			64 MB ~ 3 GB
	(PC 1600/PC 2100)
Total System Memory for Registered DDR DIMM			64 MB ~ 3.5 GB
	(PC 1600/PC 2100)
Total System Memory for Unbuffered DDR DIMM			64 MB ~ 2 GB
		(PC 2700)
Total System Memory for Registered DDR DIMM			64 MB ~ 3 GB
		(PC 2700)
		Generally, installing DDR SDRAM modules to your
		motherboard is an easy thing to do. You can refer to
		Figure 2-5 to see what a 184-pin PC 1600, PC 2100
		and PC 2700 DDR SDRAM module looks like.

Unlike installing SIMMs, DIMMs may be

“snapped” directly into the socket. Note: Certain DDR DIMM sockets have minor physical differences. If your module doesn't seem to fit, please do not force it into the socket as you may damaged your memory module or DDR DIMM socket.

The following procedure will show you how to install a DDR DIMM module into a DDR DIMM socket.

Step 1. Before you install the memory module, please place the computer power switch in the off position and disconnect the AC power cord from your computer.

Step 2. Remove the computer’s chassis cover.

AT7/AT7E