VIA KM series

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The VIA KM series (VIA KMxxx (A)) from VIA Technologies is a family of chipsets for PC motherboards . These chipsets are suitable for processors from Advanced Micro Devices with EV6 bus protocol and generally have an integrated graphics core ( IGP ).

Naming

The naming of the KM series is based on that of the VIA KT series , but there are a few differences. In general, however, it can be said that z. B. a VIA KM266 chipset roughly corresponds to a VIA KT266 + integrated graphics core.

There is a variant with the prefix "KLE". This chipset largely corresponds to the KM series and is covered in this article.

Southbridges

To be precise, is KMxxx (A) only the marketing name for the Northbridge of the chipset. Since all VIA Southbridges from the VT8231 can be combined with all VIA Northbridges from the KT266 or P4X266 through V-Link , it is not possible to determine exactly which Northbridge is combined with which Southbridge . Of course, due to the development over time and the desired equipment features on the part of the mainboard manufacturer, there are certain preferences in the combinations:

  • KM133 ALE+ 82C686B
  • KM133A LE+ 82C686B
  • KLE133 MA+ 82C686B
  • KM266 ALE+ VT8233
  • KM400 ALE+ VT8235
  • KM400A LE+ VT8237

Models

KM133

The KM133 has a ProSavage graphics core and is heavily based on the VIA KT133 . Like this one, it offers support for PC-133 memory and an FSB of 100 MHz.

KM133A

The KM133A then expands the KM133 to support an FSB of 133 MHz. Otherwise both chips are identical.

KLE133

The KLE133 is a low-cost version of the KM133A and - like the VIA Apollo MVP4 - only has one Trident Blade3D graphics core.

KM266

The KM266 offers support for DDR-SDRAM types PC-1600 / DDR-200 and PC-2100 / DDR-266. In addition, the integrated graphics core has been improved and now consists of the ProSavageDDR graphics core. In addition, analogous to the KT266, it has V-Link as a connection type to the Southbridge .

KM400

The KM400 is based on the KT400. So it supports max. PC-2700 / DDR-333 memory and an FSB of 166 MHz. Furthermore, the UniChrome graphics core, which is significantly improved compared to the ProSavageDDR, is used in the KM400 .

KM400A

Contrary to expectations that the KM400A would be based on the KT400A, this is not the case. Rather, it is based on the KT600 and thus offers an FSB of 200 MHz and supports max. PC-3200 / DDR-400 memory. The graphics core remained unchanged, however.

Model overview

Overview of VIA KTxxx (A) and KX133 Northbridges
Furnishing
Northbridge name		 Integrated
graphics processor		 Front side
bus		 Storage controller Max.
Memory size		 AGP
compatibility		 Southbridge
connection
KM133 VT8365 ProSavage 100 MHz EV6 Single-channel  SDR-SDRAM  PC-133 2.0 (1 ×, 2 ×, 4 ×) PCI
KM133A VT8365A ProSavage 133 MHz EV6 Single-channel SDR-SDRAM PC-133 2.0 (1 ×, 2 ×, 4 ×) PCI
KLE133 VT8361 / VT8364 Trident Blade3D 133 MHz EV6 Single-channel SDR-SDRAM PC-133 - PCI
KM266 VT8375 ProSavageDDR 133 MHz EV6 Single-channel  DDR-SDRAM  PC-2100 4 GB 2.0 (1 ×, 2 ×, 4 ×) 4 × V-Link
KM400 VT8378 UniChrome 166 MHz EV6 Single-channel DDR-SDRAM PC-2700 4 GB 3.0 (4 ×, 8 ×) 8 × V-Link
KM400A UniChrome 200 MHz EV6 Single-channel DDR-SDRAM PC-3200 4 GB 3.0 (4v, 8 ×) Ultra V-Link

See also

Web links