3.HARDWARE SETUP

3.5System Memory

This motherboard supports both registered and unbuffered Double Data Rate (DDR) Dual Inline Memory Modules (DIMMs). Four DDR DIMM sockets are available for 2.5V (power level) DDR Synchronous Dynamic Random Access Memory (DDR SDRAM) of 64, 128, 256, 512MB, or 1GB densities for a system memory configuration up to 4GB.

WARNING! Make sure that the DIMM you use can handle the specified DDR SDRAM speeds, otherwise, the computer will not boot.

Install system memory in any combination as follows:

DIMM Location

184-pin DDR DIMM

Total Memory

Socket 1 (Rows 0&1)

64MB, 128MB, 256MB, 512MB, (1GB)

x1

 

 

 

Socket 2 (Rows 2&3)

64MB, 128MB, 256MB, 512MB, (1GB)

x1

 

 

 

Socket 3 (Rows 4&5)

64MB, 128MB, 256MB, 512MB, (1GB)

x1

 

 

 

Socket 4 (Rows 6&7)

64MB, 128MB, 256MB, 512MB, (1GB)

x1

 

 

 

Total System Memory Using DDR DIMMs (Max. 4GB) =

3.5.1 DDR SDRAM Notes

The DDR SDRAM technology evolved from the mainstream PC66, PC100, PC133 memory known as Single Data Rate (SDR) SDRAM. DDR memory however, has the ability to perform two data operations in one clock cycle, thus providing twice the throughput of SDR memory. For example, a 200MHz DDR DIMM will support a 100MHz memory bus, and a 266MHz DDR DIMM will support a 133MHz memory bus.

A DDR DIMM has the same physical dimensions as an SDR DIMM, but it has a 184-pin footprint compared to the 164-pin of the SDR DIMM. Also, a DDR DIMM is single notched while an SDR DIMM is double notched. Therefore, a DDR DIMM is not backward compatible with SDR, and should be installed only in a socket specially designed for DDR DIMMs.

DDR DIMMs are available in both unbuffered and registered versions.

IMPORTANT: When planning to use all the DIMM slots (full-load), the 4th DIMM can only accommodate PC1600.

System Memory

3. H/W SETUP

ASUS CUV266-DLS User’s Manual

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