INSTALLATIONS
MB893 User’s Manual 7
The system power is provided to the motherboard with the ATX1 and
ATX_12V1 power connectors. ATX1 is a 24-pin power connector and
ATX_12V1 is an 8-pin 12V power connector.
Note: The power supply 5VSB voltage must be at least 2A.
Installing the Memory The MB893 motherboard supports four DDR memory sockets for a
maximum total memory of 4GB in DDR memory type. It supports
DDR333 when installed with CPUs that have clock speeds of 533MHz.
It supports DDR400 when installed with CPUs that have clock speeds of
800MHz. The board provides dual channel functionality for its DIMM
slots. DIMM1, 2 is for one channel and DIMM3, 4 is for another
channel.
Basically, the system memory interface has the following features:
Supports two 64-bit wide DDR data channels
Available bandwidth of up to 3.2GB/s (DDR400) for single-channel
mode and 6.4GB/s (DDR400) in dual-channel mode
Supports 128Mb, 256Mb, 512Mb and 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)