processor upgrades Graphics Cards

Power Macintosh 7100/80  Processor Upgrade Page

PowerMac 7100/80 Facts at a Glance

  • Processor: PPC 601, 80 MHz
  • Drive: 500MB SCSI
  • Internal SCSI: CD ROM Support
  • Slots: 3 NuBus 1 PDS
  • Installed RAM: 8MB (soldered to motherboard)
  • Max RAM 136MB
  • RAM Slots: 4, 72-pin SIMM
  • Min RAM Speed: 80 ns
  • 256 L2 Cache 
  • Introduced: 1-3-95
    Special Notes
  • 7100AV provided video in and out capabilities and supported 17" and 19" monitors


The 7100/80 represented a slight speed bump from the original 7100 which ran at 66MHz. A member of the original Power Mac lineup (which also included the 6100 and 8100) the 7100/80 featured one PDS slot and three NuBus expansion slots. These slots had been a source of woe for owners of earlier 66MHz Power Mac models who had installed high performance NuBus cards. Three factors contributed to throughput that was less than half that of a high end Quadra: flawed controller circuitry and ROMs and a clock speed that that did not synchronize well with the 20MHz NuBus. The 7100/80 eliminated this last problem but the ROM and control circuitry was a problem common throughout this lineup with the exception of the 8100/110. The video setup was an interesting one. The logic board video borrowed RAM for display, up to 640K depending on resolution and color settings. The PDS slot housed a separate video card with 1MB VRAM (2MB for the AV model) making it easy to hook up two monitors at once. The best display, of course, came from the PDS card. The 7100/80 came with a standard 256K level 2 cache which can be upgraded to 1MB for a moderate performance boost. The 7100/80 shipped with 8MB RAM soldered on to the logic board with 4, 72-pin slots available for a total of 136MB. RAM has to be installed in pairs of equal size.

Internal Links
External Links

Below you will find the MacBench 4.0 results for most of the processor upgrades available for this machine. These results are what the individual manufactures publish for their cards. In other words the speed trials were run by the manufacturer. For an independent evaluation of these cards check the Processor Upgrade Page to see if we have results available. The bar graphs below express results as a percentage of improvement over the base machine, which receives a score of 100%. Further down the page you will find a table with the actual MacBench score.

MacBench Absolute Scores

Processor Upgrade Card MacBench 4.0 Processor Score
Power Macintosh 7100/80 158
NewerTechnology MAXpower G3/210/105/512K 650
NewerTechnology MAXpower G3/240/160/1MB 875
Sonnet Crescendo G3/220/110/512K 648
Sonnet Crescendo G3/300/150/1MB 1047