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H0000074 - Apple Power Macintosh G3/233 Desktop

Identification
Brand Model Serial Number Registered
Apple Power Macintosh G3/233 Desktop SG8191MFCXX No. Too old.
CPU
Slot Qty Brand Model Speed
CPU 1 PowerPC 750 (G3) 233 MHz
Memory
Type Total Slot Size Details Brand S/N
ROM 4 MB ROM Slot 4 MB DIMM ? ?
RAM 768 MB J3 256 MB SDRAM 133MHz 3.3V (PC133) DIMM 168-pin
64-bit wide, non-ECC, not-registered/unbuffered, low profile (<1.15-inch) )
? ?
J4 256 MB SDRAM 133MHz 3.3V (PC133) DIMM 168-pin
64-bit wide, non-ECC, not-registered/unbuffered, low profile (<1.15-inch) )
? ?
J5 256 MB SDRAM 133MHz 3.3V (PC133) DIMM 168-pin
64-bit wide, non-ECC, not-registered/unbuffered, low profile (<1.15-inch) )
? ?
VRAM 2 MiB Soldered 2 MB
VRAM Empty SGRAM FPM,32-bit wide, 3.3V, 83MHz/12ns cycle timer, SO-DIMM 144-pin
  • Three DRAM expansion slots on the logic board accept 3.3 V SDRAM unbuffered 8-byte DIMMs. The 168-pin DIMM has a 64-bit-wide data bus per bank. The minimum bank size supported on the Power Mac G3 Desktop model is 2 MB, and the largest is 32 MB. The largest DIMM supported is a two bank DIMM of 64 MB using 32 Mbit SDRAM devices.
  • While the Power Mac G3 Desktop logic board supports a maximum RAM expansion of 384 MB, the 128 MB JEDEC industry-standard DIMMs are too tall to fit in the Desktop chassis. (The Power Mac G3 Desktop accommodates a DRAM DIMM height of 1.15 inches maximum.) Therefore, low-profile DRAM DIMMs must be used to reach the maximum DRAM expansion of 384 MB. Using higher-profile DRAM DIMMs, the maximum DRAM expansion for the Power Mac G3 Desktop is 192 MB.
  • The DRAM DIMMs can be installed one or more at a time. The logic board supports only linear memory organization. Therefore, no performance gains are seen when two DIMMs of the same size are installed. Any supported size DIMM can be installed in any DIMM slot, and the combined memory of all the DIMMs installed will be configured as a contiguous array of memory.
  • Power Macintosh G3 computers use SDRAM DIMMs. DIMMs from older Macintosh computers are not compatible and should not be used even though they fit into the Power Mac G3 DRAM DIMM slots.
Storage
Bus Id Type Size Brand Model S/N Partitions
Floppy bus#0 First unit (A:) FDD 1.44 MiB Apple
IDE/ATA-2 bus#0 Master(0) HDD 4.3 GiB
# Size Type Use Start Length
0 4.3GB HFS+ Mac OS 9.1 ? ?
Slave(1)
# Size Type Use Start Length
? ? ? ? ? ?
IDE/ATA-2 bus#1 Master(0)
# Size Type Use Start Length
? ? ? ? ? ?
Slave(1)
# Size Type Use Start Length
? ? ? ? ? ?
Narrow SCSI bus#0 ?
# Size Type Use Start Length
? ? ? ? ? ?
  • The Power Macintosh G3 Desktop units that support this feature can only be identified by looking at the logic board itself and verifying the revision of the built-in video ASIC made by ATI Technologies. If you are looking at the logic board with the rear connector towards you, the video ASIC is located approximately 1” from the built-in video connector on the logic board.

    • If the ASIC reads: “ATI 3D Rage II+DVD,” the logic board does not support the master and slave configuration;
    • If the controller reads: “ATI 3D Rage Pro PCI,” the logic board does support the master and slave configuration.

    Although the ATI chip is an ideal way to identify the version of the logic board, it does not control the EIDE interface.
Expansions
Slot Brand Model P/N S/N Description
Slot 1:PCI v2.0, 33MHz, 5V, 32-bit Empty
Slot 2:PCI v2.0, 33MHz, 5V, 32-bit Empty
Slot 3:PCI v2.0, 33MHz, 5V, 32-bit Empty
Slot 4:PERCH (PERsonality CHannel) Empty
Three PCI expansion slots to accept:
  • three 7-inch or 12-inch PCI cards, or
  • three 15 W cards, or
  • two 25 W cards

Accessories

  • Nothing

Wish list

  • 1 x Original documentation
  • 1 x Original software
  • 1 x Original packaging
  • 1 x Original Apple mouse
  • 1 x Original Apple keyboard
  • 1 x 3.6V battery
  • 1 x front power button
  • 1 x 4MB VRAM

Defects

  • Battery need to be replaced
  • No power button

To do

Log

When What
2017-January-23 This page creation

Costs

Documentation

Platform

Apple PowerPC documentation

Series

Apple Power Macintosh G3

Model

Apple Power Macintosh G3 Desktop

Apple Power Macintosh G3/233 Desktop

Host

H0000074

Contacts: afberendsen AT gmail DOT com
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