Power Computing PowerTower Pro

The PowerTower Pro came in a tower configuration with speed ranging from 180 to 250 MHz using the PPC 604e processor. The CPU was on a daughter card for ease of upgrade.

Power Computing logo

The PowerTower Pro was the first computer to use the PowerPC 604e CPU, and its 225 MHz speed when the model debuted made it the fastest personal computer available.

If Apple hadn’t acquired Power Computing when it did, the PowerTower Pro G3 models would have been the world’s first G3-based computers at speeds of 250 and 275 MHz.


  • PowerTower Pro 180. 180 MHz 604e processor
  • PowerTower Pro 200. 200 MHz 604e processor
  • PowerTower Pro 225. 225 MHz 604e processor
  • PowerTower Pro 250. 250 MHz 604e processor (added 1997.05.27)


Mac OS

  • requires System 7.5.3 through 9.1

Core System

  • CPU: 166-200 PPC 604
  • L2 cache: 1 MB
  • bus: 40-51.4 MHz
  • RAM: 16 MB, expandable to 1,024 MB using 168-pin 70ns or faster FPM DIMMs in 8 DIMM slots


  • Graphics: 4 or 8 MB VRAM, ixMicro TwinTurbo video card, supports 640 x 480 to 1920×1080


  • hard drive: 2GB or larger SCSI
  • CD-ROM: 8x SCSI drive


  • ADB: 1 port for keyboard and mouse
  • two miniDIN-8 GeoPorts on back of computer
  • SCSI: DB-25 connector on back of computer
  • ethernet: AAUI and 10Base-T connectors on back of computer
  • PCI slots: 6


  • power: 300W
  • size (HxWxD): 16.9″x7.7″x17.3″
  • weight: 27.0 lb
  • PRAM battery: 3.6V half-AA

Accelerators & Upgrades

Online Resources

Keywords: #powercomputing #powertowerpro

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