Chapter 1 Product Introduction
2
955X7AA Series User Manual
Main Features
Size
ATX form factor of 12 inch x 9.6 inch
Microprocessor
Supports Intel
®
Prescott, Smithfield, Cedar Mill processor in an LGA775
package
Supports FSB at 1066MHz/800MHz
Supports Hyper-Threading technology
Supports FSB Dynamic Bus Inversion (DBI)
Chipset
Intel
®
955X (North Bridge) + ICH7R (South Bridge)
System Memory
Four 240-pin DIMM slots
Supports single channel or dual channel mode
Supports DDR2 type DIMMs
Supports 256-Mb, 512-Mb, and 1-Gb DRAM densities
supports opportunistic refresh scheme
Supports Performance Acceleration Technology (PAT)
Maxinum DRAM address decode space is 8GB
Registered DIMMs not supported
USB 2.0 Ports
Supports hot plug
Eight USB 2.0 ports (four rear panel ports, two onboard USB connectors
providing four extra ports)
Supports wake-up from S1 and S3 mode
Supports USB 2.0 Protocol up to 480 Mbps transmission rate
Onboard Serial ATA
Serial ATA I Data transfer rates up to 150MB/s
Serial ATA II Data transfer rates up to 300MB/s
Intel ICH7R South Bridge supports 4 x Serial ATA II with RAID 0, RAID 1, RAID
10 (0+1), RAID 5, Matrix RAID