Chipset parts: VIA VT8377A (KT400A) VIA VT8237(R)

Documented parts

The VIA KT400A takes the AMD Athlon™ XP processor to the summit of system performance with a FastStream64™ memory controller technology, 333MHz Front Side Bus, AGP 8X Graphics, 6-Channel Audio, Serial ATA, ATA-133, USB 2.0 and 8X V-Link chip interconnect.

Building on the success of seven generations of market leading Chipsets for the AMD Athlon™ XP processor, the VIA KT400A boasts a complete set of today’s cutting-edge features combined with VIA’s ultra efficient FastStream64™ memory controller technology, delivering performance equivalent to or superior than 128-bit solutions. DDR400 memory support, offering 20% more memory bandwidth to the CPU than DDR333, 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, the VIA KT400A supports the very latest I/O technologies including AGP 8X deriving maximum performance from the most powerful graphics processors. 6-Channel surround sound AC’97 audio completes the audio-visual experience offering an integrated high quality sound solution when listening to mp3s, watching movies, or playing the latest games. The KT400A North Bridge is connected to a VT8237R Plus South Bridge through the fast 8X V-link connection at 533MB/s. With two channel native support for Serial ATA in the South Bridge supplying 150MB/s of bandwidth, as well as up to Eight USB 2.0 ports the VT8237R Plus offers the highest possible peripheral performance for professional and home users.

FastStream64 Technology: VIA FastStream64™ Technology uses an expanded array of prefetch buffers to reduce latency in the memory controller, extending performance at a lower transistor cost than dual channel implementations. With a 200/266/333MHz processor bus and supporting DDR200/266/333/400 memory, the VIA KT400A provides lightning fast access to system memory and can reach a peak bandwidth of 3.2GB/sec, 25% greater than the KT400, enabling the full performance potential of the fastest AMD Athlon™ XP processors to be harnessed.

Key features:

  • Supports AMD Athlon™ XP processors
  • 200/266/333MHz FSB settings
  • 200/266/333/400MHz System bus settings
  • Support for AGP 2X/4X/8X
  • Supports up to 4GB DDR200/266/333/400 SDRAM
  • 8X V-Link 533MB/s high bandwidth North/South Bridge interconnect
  • 664-pin BGA package
Drivers: 2 entries
Media type
OS Compatibility
1x Archive
win98 Windows 98 win9x Windows ME win2k Windows 2000 winnt5.x Windows XP
1x Archive
win95 Windows 95 win98 Windows 98 win9x Windows ME winnt4 Windows NT 4.0 win2k Windows 2000 winnt5.x Windows XP
Documentation: not available


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