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The mPGA Socket 478
Processor
•
Supports Intel Pentium 4 series CPUs
•
Supports up to 400/533 MHz system bus
Note: Only when the mainboard incorporates the
Chipset
The SiS650/SiS650GL/SiS651 Northbridge and
SiS961/SiS962 Southbridge chipsets are based on an innova-
tive and scalable architecture with proven reliability and
performance.
The mainboard may support either of the Northbridge and
Southbridge chipset mentioned above. Refer below for the
combination and respective details:
•
SiS650 Northbridge and SiS961 Southbridge – Support
up to 400 MHz system bus, ATA 100 interface and DDR
266.
•
SiS650GL Northbridge and SiS961 Southbridge - Sup-
port up to 400 MHz system bus, ATA 100 interface and
DDR 266. (Note: Without 4xAGP slot)
•
SiS651 Northbridge and SiS962 Southbridge – Support
up to 533 MHz system bus, ATA 133 interface, DDR 333
and USB 2.0 controller.
•
Two 168-pin DIMM slots for SDRAM memory modules
Memory
•
Two 184-pin DIMM slots for DDR memory modules
•
Support SDRAM up to 133 MHz /DDR up to 266 MHz
memory bus
•
Maximum installed memory is 2GB
Notes: 1. For SiS962 Southbridge chipset, DDR can sup-
•
One AMR slot for a special audio/modem riser card
Expansion Slots
•
One 2x/4xAGP slot
•
Two 32-bit PCI slots for PCI 2.2-compliant bus interface
•
Primary and Secondary PCI IDE channels
Onboard IDE
•
Support for PIO (programmable input/output) modes
channels
•
Support for Multiword DMA modes
•
Support for Bus Mastering and Ultra DMA 33/66/100/133
modes
*
When the mainboard incorporates the SiS650GL Northbridge chipset, the mainboard will not sup-
port the 4xAGP slot.
SiS651 Northbridge chipset can the system bus
support up to 533 MHz.
port up to 333 MHz memory bus.
2. Do not use SDRAM and DDR concurrently.
*
for AGP 2.0-compliant interface
2
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