Apple Workgroup Server 9150

The Workgroup Server 9150 is the only Workgroup Server for which an equivalent Power Mac model was never released.

Apple Workgroup Server 9150

Mac IIci and Workgroup Server 9150

Built into a modified Quadra 950 case, the 9150 has four NuBus slots and a processor direct slot (PDS). Like first-generation Power Macs, the 9150 uses system memory for video (up to 615 KB, depending on resolution and bit-depth). For best performance, add a video card instead of using motherboard video. See our NuBus Video Card Guide for information on adding a video card.

The 9150 was upgraded to 120 MHz April 1995. It was replaced by the 9500 in May 1996.

Note that so-called NuBus CPU upgrades do not go into a NuBus slot; they derive their name from the fact that they work in NuBus Power Macs. The processor upgrades fit into the PDS, which is normally occupied by a video card on the 9150.


  • 9150/80 introduced 1994.04.25; discontinued 1995.04.17
    9150/120 introduced 1995.04.13; discontinued 1996.05.18
  • requires System 7.1.2 through 9.1 (80 MHz), System 7.5.1 through 9.1 (120 MHz)
  • CPU: 80 or 120 MHz PPC 601
  • Bus: 40 MHz
  • Performance: unknown
  • ROM: 4 MB
  • RAM: 8 MB on motherboard, expandable to 264 MB using pairs of 4, 8, 16, or 32 MB 80ns 72-pin SIMMs, 8 SIMM sockets. It absolutely does not like 64 MB SIMMs.
  • VRAM: none, uses DRAM on motherboard
  • Video: supports thousands of colors at 512 x 384 and 640 x 480, 256 colors at 832 x 642
  • L2 cache: 512 KB (80 MHz), 1 MB (120 MHz)
  • CD-ROM: 2x (80 MHz), 4x (120 MHz)
  • ADB: 1 port for keyboard and mouse
  • serial: 2 DIN-8 GeoPorts on back of computer
  • SCSI: DB-25 connector on back of computer
  • Ethernet: AAUI connector on back of computer, requires AAUI adapter
  • NuBus slots: 4
  • one PDS slot
  • Power supply: 303W
  • Height: 18.6 in
  • Width: 8.9 in
  • Depth: 20.6 in
  • Weight: 36.8 lb
  • PRAM battery: 3.6V half-AA
  • Gestalt ID: 39 (80 MHz), 57 (120 MHz)

Accelerators & Upgrades

Online Resources


  • Apple Computer considers this computer vintage as of 2001.07.16 in the United States and 2001.07.23 in Canada. Since then, service parts are only available for units purchased in California and being serviced within California.
  • Never run a 7100, 8100, 8150, or 9150 without a PDS video card or a PDS terminator. This can damage the motherboard. If the video card goes bad, you can replace it with another video card or use motherboard video after installing a PDS accelerator or “Apple Terminator, PDS, WGS 81XX.” Based on Workgroup Server 8150 and 9150: PDS Needs Terminator, feedback from Mac Managers list, and personal experience.

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