Asus AP1720-E1 User Manual download pdf (Page 37)

ASUS PC-DL Deluxe motherboard

2-11

2.5 System memory

2.5.1 Overview

The motherboard comes with four Double Data Rate (DDR) Dual Inline

Memory Module (DIMM) sockets. These sockets support up to 4GB

system memory using 184-pin unbuffered ECC or non-ECC PC2700/

PC2100 DDR DIMMs, and allow up to 5.33GB/s data transfer rate.

The following figure illustrates the location of the DDR DIMM sockets.

2.5.2 Memory configurations

You may install 64MB, 128MB, 256MB, 512MB, and 1GB DDR DIMMs into

the DIMM sockets using the memory configurations in this section.

Important notes

1. Installing DDR DIMMs other than the recommended configurations

may cause memory sizing error or system boot failure. Use any of

the recommended configurations in Table 1.

2. In dual-channel configurations, install only identical (the same

type and size) DDR DIMM pairs for each channel.

3. Always install DIMMs with the same CAS latency. For optimum

compatibility, it is recommended that you obtain memory modules

from the same vendor.

4. Make sure that the memory frequency matches the CPU FSB

(Front Side Bus). Refer to Table 2.

5. DIMMs installed into any three sockets will function in single-

channel mode.

6. When all four sockets are populated with 1GB DIMMs (total 4GB),

the system may detect only 3.8GB due to ICH5R resource

allocation.

PC-DL

PC-DL 184-Pin DDR DIMM Sockets

80 Pins104 Pins

DDR1

DDR2

DDR3

DDR4

1 2 ... 32 33 34 35 36 37 38 39 40 41 42 ... 123 124

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Asus AP1720-E1 User Manual Page 37