2
Introducing the Motherboard
Feature
The SiS649 Northbridge (NB) and SiS965 Southbridge (SB) chipset are based on an
innovative and scalable architecture with proven reliability and performance.
SiS649
(NB)
• Supports 12 Outstanding Transactions and Quasi-Synchro-
nous Host to DRAM timing
• Accommodates High Throughput SiS MuTIOL connecting to
SiS965 MuTIOL media I/O with bi-directional 16-bit data bus
to perform 1GB/s bandwidth in 133 MHz x 4 mode
• Supports PCI-Express X16 Graphic Port
• Supports DDR400/333/266 or DDR2-533/400 SDRAM
• Supports up to 2 unbuffered DDR2-533 DIMMs or 2 unbuf-
fered DDR400 DIMMs up to 2 GB
“Hyper-Threading” technology enables the operating system into thinking it’s hooked
up to two processors, allowing two threads to be run in parallel, both on separate
“logical” processors within the same physical processor.
SiS965/965L
(SB)
• Supports DDR up to 400/333/266 MHz SDRAM memory module
• Accommodates two DDR 184-pin un-buffered DIMM sockets
• Each slot supports up to 1GB with a total maximum capacity of 2GB
Memory
Processor
Chipset
• Concurrent servicing of all DMA Devices: Dual IDE Control-
lers, SATA controller, three USB 1.1 host controllers and
one USB 2.0 host controller, LAN MAC Controller and Au-
dio/Modem DMA Controller
• Integrated MuTIOL 1G to PCI Express x1 Bridge, compliant
with PCI Express 1.0a
• Compliant with PCI 2.3 specificaiton
• Compliant with Serial ATA 1.0 specification, supports up to
four independent ports (SiS965 only)
• Compliant with AC’97 v2.3 supporting 8 Channels of audio
outputs and V.90 HSP-Modem
• Integrated USB 2.0/1.1 Controller sopporting up to eight
USB ports
Expansion Options
The motherboard uses a LGA775 socket that has the following features:
• Accommodates Intel P4/Celeron Processors
• Supports a system bus of 800/533MHz
• Supports Dual Core CPU
• Supports “Hyper-Threading” technology CPU
1394a FireWire (optional)
• Compliant Single Chip PCI Host Controller for IEEE1394-1995 Release 1.0
and IEEE 1394a-2000
• Provides two 1394a fully compliant cable ports at 100/200/400 Mbit per
second
The motherboard comes with the following expansion options.
• One PCI Express x16 slot
• Three 32-bit PCI slots
• Two IDE connectors which support four IDE channels
• A floppy disk drive interface
The motherboard supports UltraDMA bus mastering with transfer rates of 133/100
66MB/s
