CPU

• Supports Intel® Pentium® 4 processors in the 478 pin package. 
• Supports up to 2.6GHz

Chipset

• SIS® 645/650 HMAL/IGUI HMAL Chipset
- High performance host interface (400MHz). 
- 64 bit performance DDR333 (SiS 645 only)/DDR266/DDR200 memory controller. 
- Integrated A.G.P compliant target/66MHz Host-to-PCI bridge. 
- High throughput SiS HyperZip connect to SiS 961 HyperZip Media I/O. 
- Dedicated isochronous response queue. 
- High performance 2D/3D and video accelerator. (SiS650 only)
- Complete TV-Out/Digital Flat Panel solution and MPEG-2/1 video decoder. (SiS650 only)

• SIS® 961 HyperZip Media I/O Chipset
- High performance HyperZip connect to SiS series NB. 
- Integrated multi-threaded I/O link ensures concurrency of up/down data transfer. 
- Integrated HyperZip connect to PCI bridge. 
- Dual IDE Master/Slave controller. 
- Integrated USB host controller. 
- Integrated audio controller with AC97 interface. 
- Advanced power management and PC2001 compliance. 
- Integrated RTC and DMA interrupt and keyboard controller. 
- Integrated PCI to LPC bridge. 

FSB

• Supports 400MHz FSB

Main Memory 

• Supports four memory banks using two 184pin unbuffered DDR DIMM. 
• Supports up to 2GB memory size. 
• Supports 2.5v DDR DRAM. 
• NO support ECC Function.

Slots 

• One AGP (Accelerated Graphics Port) 4X slot. 
• Three PCI 2.2 32-bit PCI bus slots (support 3.3V/5V PCI bus interface). 
• One CNR (Communication Network Riser) slot. 

On-Board IDE 

• An IDE controller on the SiS961 chipset provides IDE HDD/CD-ROM with PIO, Bus Master and Ultra DMA 100/66/33 operation modes. 
• Can connect up to four IDE devices. 

Audio 

• AC'97 link controller integrated in SiS 961. 
• 2-channel software audio codec RealTek ALC201A/202A. 
- Compliance with AC97 v2.2 Spec. 
- Meet PC2001 audio performance requirement. 

Video

• Built-in Real 256 bit 2D/3D graphics engine (SiS® 650 only)

On-Board Peripherals

• On-Board Peripherals include:
- 1 floppy port supports 2 FDDs with 360K, 720K, 1.2M, 1.44M and 2.88Mbytes. 
- 2 serial ports (COM A + COM B). 
- 1 parallel port supports SPP/EPP/ECP mode. 
- 4 USB ports (Rear x 2/ Front x 2). 
- 1 IrDA connector for SIR. 
- 1 RJ-45 LAN jack (Optional). 
- 1 audio/game port. 
- 1 VGA port (SiS 650 only). 

BIOS

• 2MB Award/AMI BIOS with PnP, ACPI, SMBIOS 2.3, Green and Boot Block. 
• Provides DMI2.0, WfM2.0, WOL, WOR, chassis intrusion, and SMBus for system   management.