Asus K8V 2.5.1 Overview, Notes on DDR technology, The following figure illustrates the location of the DDR DIMM sockets

2.5System 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 3GB system memory using 184-pin PC3200/PC2700/PC2100/PC1600 unbuffered ECC DDR DIMMs and allow up to 5.33 GB/s data transfer rate.

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

K8V

K8V 184-Pin DDR DIMM Sockets

DIMM1 DIMM2 DIMM3

80 Pins 104 Pins

Notes on DDR technology

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.

A DDR DIMM has the same physical dimensions as an SDR DIMM, but it has a 184-pin footprint compared to the 168-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.

ASUS K8V Deluxe motherboard user guide 2-11