2003-04-22 Via K8T800 Opteron (Hammer) chipset. K8M800 is pin compatible, but with added UniChrome2 graphics. Formerly known as K8T400M.
2003-07-02 Via VT8237 South bridge for Via chipsets, and the Ultra V-Link interface. Succeeds the vt8235 south bridge.
Supports 6 PCI slots, 8 USB 2.0 ports, 10/100 Mbps Fast Ethernet, 2 S-ATA ports, 2 P-ATA ports, RAID 0, RAID 1, RAID 0+1, JBOD (SATA) and Via "Vinyl" audio 6 channel audio.
The predecessor, VT8235, was identical, except for the S-ATA support.
The VT8237CE, launched in 04-Q1, adds Ultra V-Link support for 1 GB/s connections to the North Bridge. An updated VT8237s with SATA-II support (3gb/s) will launch in Q3 2006.
2003-11-07 Via PT880 Pentium 4 chipset previously known as PT600 supporting the 800 MHz bus. Identical to PT800, except for an added second DDR400 channel. Includes QBM 533 support, which seem to be two DDR channels with one delayed by 90 degrees. Uses the VT8237 south bridge. There will also be a PM880 version with added UniChrome graphics launched in 04-Q1.
2003-12-16 Via K8M800 Same chipset as K8T400M, but with added UniChrome2 graphics, supporting 8 to 64 MB of UMA frame buffer. Formerly known as K8M400.
2005-01-31 Via PT894 Pentium 4 chipset earlier known as PT800 / PT890 supporting the 1066 MHz bus and 666 MHz DDR2. Uses the VT8237, and VT8251 south bridges. Includes PCIe x16 support while the PT894PRO version will include 2 PCIe links (to be run as x16 + x4 or 8x + 8x).
There will also be a PM890 / PM894 version with added DeltaChrome IGP (previously known as UniChrome 3) graphics launched later.
2005-09-02 Via P4M800 Pro Pentium 4 / Celeron chipset with support for the 800 MHz bus.
2005-10-21 Via K8M890 AMD64 chipset with PCI Express support and DeltaChrome IGP (DX9) graphics.
2006-Q3 Via P4M900 Intel Chipset with integrated Chrome9 graphics for DirectX 9 and shader model 2.0 support. Sampling now (June -06)
2006-Q3 Via PT900 Chipset including a dual channel DDR-2 533/667/800 memory interface for the enthusiast segment. Sampling now (June -06)