blog:386_shootout_umc

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UMC UM82C481

A 386DX/486 motherboard acquired from an auction, with information, repairs, testing and benchmarks.

The UMC UM82C481 seems to be a design from the middle of the 386 era; it has a compact chipset, but not quite the 1-chip solution of the very last boards, it has 8x 30pin SIMM sockets, sockets for up to 256KBytes of cache

A summary of the motherboard capabilities follows:

Item
Form Factor
Chipset
Dimensions
Maximum RAM
Cache
FPU
CPU Type
CPU Speeds
Expansion

Motherboard jumper settings can be found in the following locations:

Configuration 0

Test Config 0
Processor Speed MHz
Wait states 1
Norton Sysinfo CPU
Norton Sysinfo HDD
Norton Sysinfo Overall
CheckIt Dhrystones
CheckIt Whetstones
CheckIt Video chars/sec VGA 1
CheckIt Video chars/sec VGA 2
CheckIt HDD Transfer
Landmark CPU
Landmark FPU
Landmark Video VGA 1
Landmark Video VGA 2
3DBench VGA 1
3DBench VGA 2
ATPerf RAM Read
ATPerf RAM Write
ATPerf ROM Read
ATPerf Video Write VGA 1
ATPerf Video Write VGA 2
CompTest RAM thruput
CompTest Effective WS
CompTest MFLOPS
CompTest Video BIOS VGA 1
CompTest Video BIOS VGA 2
CompTest Video Direct VGA 1
CompTest Video Direct VGA 2
CompTest Dhrystones

Games Results

In addition, the following game benchmark results were recorded:

Test Config 0
Wolfenstein 3D (FPS)
F1GP Bench 1 (CPU %)

Software Versions

  • Norton Sysinfo 8.0
  • CheckIt 2.1
  • Landmark 6.00
  • 3DBench 1.0
  • ATPerf 2.00
  • Comptest 260

Notes

(Go back to the 286 PC main page)

  • blog/386_shootout_umc.1612885534.txt.gz
  • Last modified: 2021/02/09 15:45
  • by john