KT400VIA KT400 takes the AMD Athlon™ XP processor to the summit of system performance with enhanced support for a DDR333 SDRAM, ultra fast AGP 8X graphics, ATA-133, USB 2.0 and an 8X V-Link chip interconnect

Building on the success of the VIA KT333, the market leading DDR333 SDRAM chipset for the AMD Athlon™ XP processor, the VIA KT400 boasts a complete set of today’s cutting-edge features combined with VIA’s ultra efficient memory controller technology, delivering unparalled system performance to Socket A compatible processors. Enhanced DDR333 memory support, offering 25% more memory bandwidth to the CPU than mainstream DDR266, and the fast 200/266/333MHz processor bus, unleash the full power of AMD Athlon™ XP processors, enabling stunning performance across the full spectrum of applications.

In addition, VIA KT400 supports I/O technologies including AGP 8X deriving maximum performance from the most powerful graphics processors, and a 8X V-link chip interconnect with 533MB/s of bandwidth between North and South Bridge enabling the processor to exploit the full potential of peripheral devices.

The VIA VT8235 South Bridge also features a complete suite of networking and communication features including support for 6 USB 2.0 ports for peripheral connectivity 40 times faster than USB 1.1, and ATA-133 support, the fastest IDE interface available. Additional features include integrated into the South Bridge include VIA MAC for 10/100Mbps Ethernet, integrated PCI support, 6 Channel Surround Sound with VIA Vinyl Six-TRAC AC’97 audio and MC’97 modem.

Benefits of VIA KT400

Unmatched Performance for the AMD Athlon™ XP processor: The VIA Apollo KT400 features the world’s most efficient memory controller, designed for exceptionally high performance. With a 200/266MHz processor bus and supporting DDR200/266/333 memory, the VIA Apollo KT400 provides lightning fast access to system memory and can reach a peak bandwidth of 2.7GB/sec, 25% greater than the KT266A, enabling the full performance potential of the fastest AMD Athlon™ XP processors to be harnessed.

A Platform for Next Generation Graphics: The AGP 8X implementation in the VIA Apollo KT400 North Bridge offers 2.1GB/s of dedicated bandwidth to the next generation of discrete 3D graphics solutions offering end users easy upgradeability and ensuring there is enough performance headroom for a solid return on their motherboard investment.

Ultimate Connectivity: The VT8235 South Bridge with 8X V-link, USB 2.0 and ATA-133 provides the most advanced connectivity features to ensure the ultra fast processor and memory are not restricted by peripheral bottlenecks. USB 2.0 and ATA-133 high-speed transfer technologies are essential for today’s bandwidth-hungry peripherals, and greatly enhance the performance of demanding applications including interactive gaming and digital photography.

VIA Stability and Reliability: VIA Chipset Platforms offer a balance of reliability and flexibility derived from using proven, modular components and evolutionary design principles, enabling the VIA Apollo KT400 to share the best characteristics of award winning previous generation products like the VIA Apollo KT333.

KT400 Block Diagram


Key Features

» Supports AMD Athlon™ XP processors
» 200/266/333MHz FSB settings
» 200/266/333MHz System bus settings
» Support for AGP 2X/4X/8X
» Supports up to 4.0GB DDR200/266/333SDRAM
» 8X V-Link 533MB/s high bandwidth North/South Bridge interconnect
» Support for Advanced Communications Riser (ACR) Card Standard
» Integrated 6 channel Surround Sound AC-97 Audio
» Integrated MC-97 Modem
» Integrated 10/100 Ethernet MAC
» Support for ATA 33/66/100/133
» Support for USB 2.0, 6 USB ports, UHCI compliant
» Advanced power management capabilities including ACPI/OnNow
» 664-pin BGA VT8368 North Bridge
» 487-pin BGA VT8235 South Bridge

VIA Technologies, Inc.