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Power Macintosh 8500/150 Processor Upgrade Page

PowerMac 8500/150 Facts at a Glance

  • Processor: 604, 150 MHz
  • Drive: 1.2GB SCSI
  • Internal SCSI: Fast SCSI 10MB per sec
  • Slots: 3 PCI
  • Installed RAM: 16MB or 32MB
  • RAM Slots: 8, 168-pin DIMM
  • Min RAM Speed: 70 ns
    • Notes: 128MB DIMMs can be used, but have not been tested.
  • Installed VRAM: 2MB
  • On-board AAUI and 10baseT
  • Composite and S-video
  • Introduced: 4-22-96
  • Initial Retail Price: $4,700


The Power Macintosh 8500/150 represented a speed bump for an already existing Macintosh model. Part of the second generation PowerMac family it was released in the spring of 96 when there was a great deal of competition from the then existing Macintosh clone makers, such as Power Computing. The 8500 was considered a good, if expensive, performer and was a mid-level machine aimed at in-house publishing, media authoring and technical market segments. It distinguished itself from other machines in its class by having near broadcast quality video circuitry built-in. The machine is capable of 24-bit video input/output and has both composite and s-video connectors. The 8500/150 sports a 604 PowerPC processor which was the fastest PowerPC processor at that time. The 604 processor would last only a relatively short time, to become replaced in successor machines by the 604e. The 8500's processor resides on a separate daughter card making it easily upgradable to a faster processor. The machine sports 3 PCI slots, an extra drive bay (internal Fast SCSI - 10MBps) and 8 memory slots for a total possible capacity of 512MB of RAM. The 8500 shipped with 2MB of video RAM , the ability to add 2 more and also with an 256K L2 cache.

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    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 8500/150 247
    Sonnet Crescendo G3/233/177/512K 720
    PowerLogix PowerForce G3/220/110/512K 742
    Vimage Vpower G3/233/117/512K 757
    XLR8 MACh Speed G3/233/117/512K 777
    NewerTechnology MAXpower G3/250/125/512K 800
    NewerTechnology MAXpower G3/266/133/512K 875
    XLR8 MACh Speed G3/266/133/512K 881
    Sonnet Crescendo G3/266/133/1MB 920
    Vimage Vpower G3/266/133 939
    Mactell PowerJolt G3/250/250/1MB 973
    NewerTechnology MAXpower G3/300/150/512K 975
    Mactell PowerJolt G3/266/266/1MB 1018
    Vimage Vpower G3/300/150/1MB 1045
    Sonnet Crescendo G3/300/150/1MB 1045
    PowerLogix PowerForce G3/300/150/1MB 1047
    NewerTechnology MAXpower G3/300/150/1MB 1060
    XLR8 MACh Speed G3/300/200/1MB 1091
    XLR8 MACh Speed G3/333/167/1MB 1154
    Sonnet Crescendo G3/333/167/1MB 1155
    Mactell PowerJolt G3/300/300/1MB 1161
    NewerTechnology MAXpower G3/333/166/1MB 1179
    Sonnet Crescendo G3/366183/1MB 1252
    PowerLogix PowerForce G3/300/300/1MB 1276
    XLR8 MACh Speed G3/366/183/1MB 1286
    NewerTechnology MAXpower G3/366/183/1MB 1286
    XLR8 MACh Speed G3/400/200/1MB 1399
    Sonnet Crescendo G3/400/200/1MB 1400
    NewerTechnology MAXpower G3/400/200/1MB 1417