UMC

UMC are a motherboard chipset manufacturer for PC compatibles. They also produced some CPUs under license from Intel before designing their own.

UM82C210

A chipset designed for 286 or 386SX PCs.

 

UM82C330

Called "Twinstar", this was a 386 chipset.

 

UM82C390

This was an 80386 chipset that supported 40 MHz processors such as the Am386DX-40.

 

UM82C482F, 82C481BF

A 486 motherboard chipset

Motherboards that use this chipset are:

Elitegroup UM486V-AIO

 

UM82C491F / 82C493F

This was an 80386 chipset.

Award BIOS Chipset Code: 214X2 or 2C4X2

Motherboards that use this chipset are:

Chicony CH-491E
Elitegroup UC4913

 

UM8498F, UM8496F

This was an 80386 and 80486 chipset. Supports write-back level 1 cache.

Award BIOS Chipset Code: 2C4X6

Images: Socket 3 VLB Motherboard

 

 

UM8881F, UM8886F

Another 486 chipset. Supports write-back level 1 cache.

Award BIOS Chipset code: 2A4X5

Motherboards that use this chipset are:

Chicony TK8880F
Biostar MB-8433UUD
EliteGroup UM8810P-AIO
Shuttle HOT-433