ACRPC.NET

My Vintage Computer Virtual Museum and blog page.

Generic 486

My Generic 486 (built in 2013, upgraded in 2019)

  • AMD 5×86-133 CPU (in PCChips M919 mother board)
  • 64MB RAM
  • AHA-1522A SCSI Card
  • 2GB Sandisk CF card hard drive
  • PD/CD-Rom drive (kind of a precursor to CD-R and DVD-RAM)
  • 5.25″ 360K floppy (used to make disks for older PCs)
  • 3.5″ 1.44MB floppy
  • Internal iomega IDE Zip 100 drive
  • Integrated PCI IDE and I/O
  • Sound Blaster 16 (CT4170)
  • 3C509 10-BaseT NIC
  • Trident 9440VL 1MB VLB Video (though I may upgrade, looking at a few contenders)
  • MS-DOS 6.22 & Windows 3.1
  • ALT12887 discrete realtime circuit in place of failed Dallas RTC module.

I’ve recently upgraded this system with a PCChips M919 board (with 256k of REAL cache). PCChips may be infamous for cheating people on cache memory, and general cheapness, but the M919 is probably one of the most overclockable 486 boards out there.  I will be testing a few different CPUs in this, an AMD 5×86 133, a Cyrix 5×86 100GP, and a Pentium Overdrive 83, I plan to see which one runs the fastest, I am betting the Cyrix with it’s cache and branch prediction might edge out the win, at stock speeds, but I bet the AMD wins on overclocking, not really sure how the POD will perform.




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