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VIA UniChrome KM400
The VIA UniChrome KM400 Chipset is the next generation integrated graphics chipset for the AMD Athlon XP processor. An ultra fast HyperTransport link to the CPU, integrated UniChrome 2D/3D graphics, AGP 8X port, 8X V-Link, Serial ATA/RAID, ATA-133 and USB 2.0 combine to make the KM400 a feature rich and scalable chipset for mainstream corporate and consumer desktop systems.

The VIA UniChrome KM400 chipset features the S3 Graphics integrated UniChrome 2D/3D graphics core with MPEG-2 acceleration and DuoView technology for excellent multimedia performance and complete flexibility on the desktop. The chipset North Bridge exchanges data with the CPU through a flexible and ultra fast Front Side Bus at speeds of up to 333MHz, and features an AGP 8X controller for graphics upgrades. The KM400 also supports a complete range of DDR memory speeds, including
DDR200/266/333/400, enabling OEMs and system integrators the opportunity to attack different price points based on the same mainboard platform.

The VIA UniChrome KM400 North Bridge is connected to the new
VIA VT8237 South Bridge through a fast 8X V-Link connection. With native support for Serial ATA in the VT8237, supplying 150MB/s of bandwidth to your hard drive, as well as support for up to eight USB 2.0 ports, the VT8237 offers the highest possible peripheral performance for professional and home users. In SATA mode, the VIA VT8237 also provides multi level RAID support including RAID level 0 for maximum performance, RAID Level 1 for maximum security, RAID level 0+1 and JBOD.

The
VIA VT8237 also features support for up to two Parallel ATA-133 devices, extending flexibility to the system integrator by allowing for mainstream or value configurations leveraging the existing technology standard. Additional features include a VIA MAC for 10/100Mbps Fast Ethernet connectivity, integrated PCI support, 6-channel surround sound AC'97 audio and an MC'97 modem. The VIA UniChrome KM400 also benefits from the advanced unified VIA Hyperion 4-in-1 driver set, delivering seamless compatibility with the latest software and hardware.


Features

Features

VIA UniChrome KM400 + VIA VT8237

VIA UniChrome KM400 + VIA VT8235CE

North Bridge

VIA VT8378

VIA VT8378

Processor Support

AMD Athlon XP

AMD Athlon XP

Front Side Bus

200/266/333MHz

200/266/333MHz

Memory Support

200/266/333MHz

200/266/333MHz

Integrated Graphics

UniChrome™ 2D/3D Graphics with motion compensation

UniChrome™ 2D/3D Graphics with motion compensation

AGP Support

AGP 2X/4X/8X (AGP 3.0)

AGP 2X/4X/8X (AGP 3.0)

South Bridge

VT8237

VT8235CE

North/South Bridge Link

8X V-Link (533MB/s)

8X V-Link (533MB/s)

Integrated Audio

AC'97 6-Channel Surround Sound

AC'97 6-Channel Surround Sound

Integrated Modem

MC'97

MC'97

Integrated Network Controller

VIA MAC 10/100 Mbps Fast Ethernet

VIA MAC 10/100 Mbps Fast Ethernet

PCI Devices/Slots

6 slots

6 slots

IDE

Serial ATA/RAID(2 channels)

PATA-133 (2 channels)

 

PATA-133 (1 channel)

 

USB 2.0

8 ports

6 ports

Super I/O

LPC Super I/O

LPC Super I/O

IO APIC

Yes

Yes

Power Management

ACPI/APM/PCI/PM

ACPI/APM/PCI/PM

Key Features
· Supports
AMD Athlon XP and AMD Duron Processors
· 200/266/333MHz Front Side Bus
· S3 Graphics UniChrome 2D/3D Graphics with motion compensation
· Support for AGP 2X/4X/8X
· 8X V-Link 533MB/s High Bandwidth North/South Bridge Interconnect
· Integrated VIA Vinyl 6-channel Surround Sound AC'97 Audio
· Integrated MC'97 Modem
· Integrated 10/100Mbps Fast Ethernet MAC
· Support for Serial ATA/RAID (VT8237 only)
· Support for ATA-33/66/100/133 (up to 2 devices)
· Support for USB 2.0, eight USB ports, UHCI compliant
· Advanced power management capabilities including ACPI/OnNow
· 552-pin HSBGA VIA VT8378 North Bridge
· 539-pin BGA
VIA VT8237 or VT8235CE (pin-to-pin compatible) South Bridge
Design Wins
Abit VA10
AOpen MK77M-8XN µATX
Asus K7V8X-MX µATX
Biostar M7VIZ µATX
Biostar iDEQ 200V SFF
DFI KM400-MLV µATX
ECS KM400-M2 µATX
Foxconn K7V400MG-F
(formerly 400M01-G-6EL)

Gigabyte 7VM400M-RZ
Lemel LM-KM400 SLV µATX
Mach Speed Venom V4MDMP µATX
MSI KT4AV
Shuttle MK40V/N µATX
XPC Shuttle SK43G
Soltek EQ3704 Barebone
Soltek SL-75MIV2/SL-75MIV2-L

Review
X-bit labs