Architecture Of The VIA KT400
Northbridge of the VIA KT400 chipset.
Southbridge VT8235 of the KT400 chipset.
Basically, KT400 differs from its predecessor, VIA KT333, in both, its Northbridge and its Southbridge. The Northbridge KT400 includes changes such as a memory controller for 200 MHz memory clock (DDR400 support), as well as support for AGP 8x with modern graphics cards. There are also new features in the Southbridge VT8235: aside from the very first integration of USB 2.0, there is also Ultra DMA/133, for a total of four IDE channels.
Basic structure of the VIA KT400 chipset.