Asus A7N266-E 3.5System Memory, 3.5.1 DDR DIMM Support, Note:, Table Legend:, Memory Population:, Configuration Rules:, ASUS A7N266-EUser’s Manual, System Memory

3.HARDWARE SETUP

3.5System Memory

3.5.1 DDR DIMM Support

The three DDR DIMM sockets support 2.5Volt (power level) Double Data Rate Synchronous Dynamic Random Access Memory (DDR SDRAM) of 64MB, 128MB, 256MB and 512MB to form a memory size between 64MB to 1.5GB. One side (with memory chips) of the DIMM takes up one row on the motherboard.

TwinBank™ Technology: to function at 128-bit, 4.2 GB/second “Dual channel DDR mode”, at least 2 or more DIMM modules must be installed; with only one DIMM installed, the memory functions at only 64-bit, normal mode.

~DDR DIMMs on this motherboard support only 184-pin, unbuffered, non-ECC memory. DDR DIMMs with CAS Latency of 2.0 (PC2100A) or 2.5 (PC2100B) are both supported. (See the General DIMM memo on page 27 for details.)

Configuration Rules:

1.DIMMs must be populated consecutively, in order, starting with DIMM Socket 1, then 2 and 3.

2.The total number of banks must not exceed five: ie.: two dual load modules and

one single load module. Note: Do not populate DIMM Socket 3 with any dual load modules.

Memory Population:

Memory loads must be distributed according to the various possible combinations shown in the following table:

Capacity	DIMM 1 (A0)	DIMM2 (B0)	DIMM3 (B1)
128 MB	64MB - 1B or 2B	64MB - 1B or 2B	X
192 MB	128MB - 1B or 2B	64MB - 1B or 2B	X
256 MB	128MB - 1B or 2B	128MB - 1B or 2B	X
	128MB - 1B or 2B	64MB - 1B or 2B	64MB - 1B
384 MB	256MB - 1B or 2B	128MB - 1B or 2B	X
	128MB - 1B or 2B	128MB - 1B or 2B	128MB - 1B
512 MB	256MB - 1B or 2B	256MB - 1B or 2B	X
	256MB - 1B or 2B	128MB - 1B or 2B	128MB - 1B
786 MB	512MB - 1B or 2B	256MB - 1B or 2B	X
	256MB - 1B or 2B	256MB - 1B or 2B	256MB - 1B
1 GB	512MB - 1B or 2B	512MB - 1B or 2B	X
	512MB - 1B or 2B	256MB - 1B or 2B	256MB - 1B
1.25 GB	512MB - 1B or 2B	512MB - 1B or 2B	256MB - 1B
1.5 GB	512MB - 1B or 2B	512MB - 1B or 2B	512MB - 1B

Table Legend:

1B = 1 bank: a single load module. 2B = 2 bank: a dual load module.

System Memory

3. H/W SETUP

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