processor upgrades Graphics Cards

PowerCenter Pro 240 Processor Upgrade Page

PowerCenter Pro 240 Facts at a Glance

  • Processor: 604e, 240MHz
  • L2 Cache: 1MB
  • Drive: 2GB SCSI-3
  • Internal SCSI-3 up to 20MBps
  • Slots: 3PCI
  • Installed RAM: 32MB (512 Max)
  • RAM Slots: 4, 168-pin DIMM
  • Min RAM Speed: 70 ns
  • Installed VRAM: 2MB
  • Introduced: 3-97
  • Original Price: $2,095
  • Notes:

  • ATI Rage II graphics chip
  • Ultra SCSI-3 accelerator card
  • 60Mhz system bus


The PowerCenter Pro series of Mac clones from Power Computing made their debut in the late winter of 1997. Initially there were two models, a 180Mhz and 210Mhz. A 240Mhz model will follow on later that summer. The machines came standard in a desktop enclosure, however for an extra $100 you could get your PowerCenter Pro inside a minitower. Built upon the same motherboard found in the 7200 series of PowerMacs from Apple, PowerComputing took full advantage of the boards ability to run a 60Mhz system bus. In contrast Apple clocked the 7200's system bus at 40Mhz. Despite being considered midrange machines, the PowerCenter Pros competed well with the high-end machines of the time, in terms of performance, at considerably lower cost.

The processer found in these machines is the 604e which is located on a separate daughter card making its replacement a snap. They shipped with 16MB of RAM, 1MB of L2 cache, the 3D Rage II graphics chip from ATI for 2D and 3D graphics acceleration, and 2MB of VRAM (expandable to 4MB). RAM is expandable to 512MB using 4 DIMM slots. Each machine has 3 PCI slots, one of which is occupied by a Wide Ultra SCSI-3 PCI card (20MBps). The drives consist of a 2GB 5,400 rpm hard drive and a 16X CD-ROM drive. There are both VGA and Mac monitor ports and the machines come with 10BASE-T and AAUI Ethernet. In the tower models there are two free 5.25" drive bays.

Internal Links
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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 scores.




MacBench Absolute Scores

Processor Upgrade Card

MacBench 4.0 Processor Score

PowerCenter Pro 240 631
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