CPU
• Supports Intel® Pentium® 4 processors in the 478 pin package.
• Supports up to 2.6GHz
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 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.
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FSB
• Supports 400MHz FSB
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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.
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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.
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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.
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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)
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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).
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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.
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Dimension
• 24.4 cm(L) x 23.0 cm(W) MicroATX Form Factor
Mounting
• 6 mounting holes.
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