List of VIA chipsets

This is a list of computer motherboard chipsets made by VIA Technologies. Northbridge chips are listed first, primarily by CPU-socket or CPU-family; southbridge chips are listed in a later table.

Background
VIA chipsets support CPUs from Intel, AMD (e.g. the Athlon 64) and VIA themselves (e.g. the VIA C3 or C7). They support CPUs as old as the i386 in the early 1990s. In the early 2000s, their chipsets began to offer on-chip graphics support from VIA's joint venture with S3 Graphics beginning in 2001; this support continued into the early 2010s, with the release of the VX11H in August 2012.

VIA chipsets declined in popularity as other chipsets began to offer better performance, VIA entered other markets and Intel began to offer more powerful integrated graphics on their CPU dies.

Chipsets by CPU socket
The term V-Link indicates VIA's northbridge/southbridge interconnect bus.

Socket 5 and Socket 7
All chipsets listed support a maximum cache memory size of 2 MB and are PCI 2.1 compliant


 * The only difference between the Apollo Master and the Apollo Master Plus is that the Plus does not support pipelined burst cache memory.
 * The Apollo VP and Apollo VP2 chipsets were initially referenced by VIA as Apollo VP-1 and Apollo VP-2 respectively, later renamed to Apollo VP and Apollo VP2 when the "/97" upgrades became available.
 * The Apollo VPX chipset is a low-cost solution that replaced the Apollo VP but with features similar to the VP2.
 * AMD licensed the VIA Apollo VP2/97 core logic architecture for its AMD 640 chipset.

Socket 8, Slot 1 and Socket 370

 * ProSavage PM133 - graphics core from S3, derived from a combination of the 3D component of Savage4 and 2D from Savage 2000.
 * PLE133 and PLE133T - graphics core from Trident, derived from Blade3D.
 * CLE266 (Castle Rock) - graphics core from S3, derived from S3 Savage series under the brand name UniChrome.
 * Asus advertised some boards as Apollo Pro 133Z. 133Z appears to be a late revision of or step up from 133A, but it is not listed on the VIA site.

Slot A and Socket A

 * KT266 contains a hardware bug which causes system instability when using the AGP slot at the specified max capacity of 4×.
 * ProSavage KM133, KM133A, KM266, KM400, KM400A - Similar to the above, but with integrated graphics. After KM133, DDR is supported. The KM133 uses an IGP consisting of the S3 Savage4 3D core and Savage 2000 2D functionality. KM266's ProSavage8 IGP is similar but has an additional 3D pipeline. The KM400 chipset and its "A" variant use the VIA UniChrome IGP. KM400A supports FSB 400 unlike the KT400A
 * Later revisions of the KT333 (sometimes called KT333CF) are rebadged KT400 chips with AGP 8x disabled. On motherboards with this chipset AGP 2x cards which require 3.3V are not supported.
 * KT133E (= VT8363E + VT82C686B) appears on Gigabyte 7IXEH but is not listed on the VIA site. Based on the specifications of that motherboard, KT133E appears to be equivalent to (or a cost-reduced rehash of) KT133, supporting 133 MHz for memory but only 100 MHz for the CPU.
 * Some revisions of KT333 support 166 MHz FSB.

Socket 423, 478 and LGA 775

 * Being a reduced version of PM880, PM800 is not as closely related to PT800 as P4M890 to PT890. Because of its high cost, It is soon obsoleted in favor of P4M800 and then P4M800 Pro, both of which have a lower rated V-Link and feature no special memory technology such as FastStream64 or StepUp that is common in the other listed 8xx chipsets.
 * VIA PT890, P4M890, PT900, P4M900 – VIA's PCIe-only chipsets. The P4M chipsets have onboard graphics VIA UniChrome Pro.
 * VIA Chipsets P4 Series for Intel CPU Comparison Chart

Socket 754, 939, 940, AM2

 * VIA K8M890, K8T890, K8T900 – VIA's PCIe-only chipsets.
 * The K8M800 chipsets has the onboard graphics VIA UniChrome Pro; the K8M890 has the Chrome9.
 * The Athlon 64 chipsets do not have memory controllers, because memory controller is integrated into the CPU. Supported memory types depend on the CPU and socket used.
 * VIA Chipsets K8 Series for AMD CPU Comparison Chart
 * The K8M890 was also used on boards with Socket 754, like the ASUS K8V-VM Ultra

Chipsets supporting both VIA and Intel processors

 * VIA VX700 - Supports VIA C7-M or C7-ULV 533/400 MHz FSB
 * DDR2 533/400/333 or DDR400/333
 * Utilizes the VIA UniChrome Pro Integrated Graphics Processor (IGP)
 * VIA VN800 – Supports VIA C7-M / Intel Pentium M / Celeron M, and Yonah (Core Solo and Core Duo) Processors
 * VIA UniChrome Pro Integrated Graphics Processor (200 MHz core clock)
 * DirectX 7
 * Support product: (VIA EPIA -VB6002G Mini-ITX Board)
 * * - Cited in marketing literature as supporting up to 4 GB DDR2 SDRAM; only supported up to 1 GB DDR2 max actual per memory-slot. Motherboards with 1-slot support 1 GB-max; motherboards with 2-slots support 2 GB-max, etc.
 * VIA VN896 (Mobile) and VIA CN896 (Desktop).
 * VIA VN896(Mobile) can support Intel Pentium M / Celeron M, Core Solo / Core Duo, and Core2 Duo Processors
 * Support product: (BenQ Joybook R42)
 * VIA VX800
 * First VIA mobile chipset to support DirectX 9.0 (Pixel Shader 2.0)
 * VIA Chrome9 HC3 Integrated Graphics Processor (250 MHz engine clock, up to 256 MB frame buffer)
 * Built-in VIA Vinyl HD Audio controller supporting up to eight high-definition channels with a 192 kHz sampling rate and 32-bit sample depth
 * Supports 400/800 MHz FSB
 * Supports up to 4 GB of RAM with two 64-bit DDR2-667 DIMMs
 * Single-chip solution (no southbridge or V-Link required)
 * Designed towards being used with the VIA Isaiah 64-bit processor.
 * Maximum power consumption (TDP max) of 5 watts.
 * VIA VX800U
 * Similar to the VIA VX800
 * VIA Chrome9 HC3 integrated graphics (166 MHz engine clock, up to 256 MB frame buffer)
 * Supports a 400 MT/s FSB
 * Supports up to 4GBs of RAM with two 64-bit DDR2-400 DIMMs
 * Does not support PCIe or SATA due to their power requirements
 * Maximum power consumption of 3.5 watts
 * Intended for very low-power devices
 * VIA VX855
 * Full hardware acceleration of H.264, MPEG-2 and WMV9
 * Single-chip solution (no southbridge or V-Link required)
 * Maximum power consumption of 2.3 watts
 * VIA VN1000
 * DirectX 10.1
 * 32 stream processors and 4 sampling units, supports Shader Model 4, OpenGL 3.0 and OpenCL 1.0 for GPGPU applications.
 * Acceleration of Blu-ray, MPEG-2, WMV-HD, VC-1 and H.264

Chipsets supporting VIA processors

 * VIA VX900
 * Similar to VX855, but more expansion options
 * VIA VX11/H
 * First VIA chipset built on the 40 nm CMOS process
 * Maximum power consumption of 5.8 watts
 * DDR3-1333 memory with maximum memory capacity of 16 GB
 * Integrated ChromotionTM 5.0 DX11 2D/3D graphics & video processor
 * DirectX 11, OpenGL 3.2.
 * Acceleration of Blu-ray, MPEG-2, WMV-HD, VC-1 and H.264
 * A card reader interface with support for MMC, MS Pro HG, and SDHC/SDXC

Southbridge chips

 * The SATALite interface allows for two additional SATA devices (4 total). It is required for RAID 0+1 on VT8237R Plus.
 * The VT8237 and VT8237R do not support SATA speed autonegotiation and will not work with SATA-II or III drives unless the drive has a compatibility mode jumper set. The VT8237R Plus supports SATA II drives but only at the 150 MB/S speed.
 * The SATA-II feature of VT8237S is limited to 300 MB/S Data Transfer Rate bearing no NCQ functionality.
 * Motherboards frequently had VIA companion chips for added functionality such as better audio (8 channel), more/faster USB (i.e. USB 2.0 for VT8233), or Gigabit Ethernet.
 * The software modem is supported through a MC'97 or HD Audio codec chip and requires external components to implement the electrical connection to the telephone line. This circuitry may be included on the motherboard directly or added through a communications riser slot.
 * The chipset Ethernet MAC requires an additional PHY chip. Some vendors opted to add a MAC and PHY from a different manufacturer instead of using the chipset's built in capability.

Hardware bugs
The KT133 chipset corrupted disk subsystems; specifically, the 686B Southbridge had issues with Creative's SBLive! sound cards. A BIOS update was released by VIA to fix this issue; however, it is not known if all motherboards with 686Bs had their BIOSes updated. The KT266 contains a hardware bug which can cause system instability when using the AGP slot at the 4× speed.