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Chapter 1 21
System Memory
Super I/O
USB Interface
Item Specification
Feature • The GMCH system memory controller directly supports one or two
channels of memory (each channel consisting of 64 data lines).
• DDRII memory 533/667/800MHz support
• I/O voltage of 1.8V for DDRII
• Only unbuffered DIMMs support
• Max. memory bandwidth of 6.4GB/s in single channel or dual channel
asymmetric mode, or 12.8GB/s in dual channel interleaved mode
assuming DDRII 800MHz
• Four banks for all DDRII devices up to 512MB density support, eight
banks for 1GB DDRII devices
• Using 256MB technology, min. 128MB memory capacity, assuming single
channel mode
• Using 1GB technology dual channel interleaved mode, max. 8GB
memory capacity
• Max. 8GB DRAM address decode space
• Up to 32 simultaneous open pages per channel support (assuming four
banks of eight bank devices)
• Improved flexible memory architecture
Item Description
Chip ITE IT8718DX
Feature • Meets LPC specification 1.0
• PS/2 keyboard and PS/2 mouse support
• Up to four 3.5” disk drives support
• Two serial ports, one EPP/ECP parallel port support
• Three fans support (including fan speed control, speed monitoring
inputs)
• IrDA 1.0 SIR protocol with maximum baud rate up to 115.2K bps
• Hardware monitor support
Item Description
Chip ICH8DH
Feature • Eight USB 2.0 ports support
• Dual stack with RJ-45 back panel connector
• Dual stack with 1394 connector in rear side
• Two header supporting two USB ports for front panel cabling