Intel MB820 user manual ATX Power Installation, Installing the Memory

INSTALLATIONS

ATX Power Installation

The system power is provided to the motherboard with the ATXP1 and ATXP2 ATX power connectors. ATXP2 is a 4-pin 12V power connector. ATXP1 is to be connected to a standard ATX power connector.

Installing the Memory

The MB820 motherboard supports four DDR memory sockets for a maximum total memory of 4GB in DDR memory type. You can install unbuffered & ECC DDR DIMMs. It supports DDR266 when installed with CPUs that have clock speeds of 400MHz. It supports DDR266/333 when installed with CPUs that have clock speeds of 533MHz. It supports DDR266/320/400 when installed with CPUs that have clock speeds of 800MHz. The board provides dual channel functionality for its DIMM slots. DIMM1/2is for one channel and DIMM3/4 is for another channel. Enabling dual channels can increase data access rates by putting two similar-size DDR modules into two same-color DIMM slots.

Basically, the system memory interface has the following features: Supports two 64-bit wide DDR data channels

Available bandwidth up to 3.2GB/s (DDR400) for single-channel mode and 6.4GB/s (DDR400) in dual-channel mode.

Supports ECC DIMMs.

Supports 128Mb, 256Mb, 512Mb, 1Gb DDR technologies. Supports only x8, x16, DDR devices with four banks Registered DIMMs not supported

Supports opportunistic refresh

Up to 16 simultaneously open pages (four per row, four rows maximum)

MB820 User’s Manual 5