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Umax C600/200 Processor Upgrade And Discussion Page - Performance Of Latest G3 Processor Upgrades

Umax C600/200 Facts at a Glance

  • Processor: 603e, 200MHz
  • System Bus Speed: 40MHz
  • L2 Cache: 256k
  • Installed RAM: 16MB, 144MB Max
  • Min RAM Speed: 70 ns
  • RAM Slots: 2, 168-pin DIMM
  • VRAM: 1MB (uses logic board RAM for video)
  • Slots: 3 PCI, 1 comm.
  • Drive: 2.1GB IDE
  • Int. Drive Bays: 4
  • CD-ROM: 8x, 12x (C600e/200)
  • Introduced: October 1996
  • Discontinued: May, 1998
  • Original Price $1,999
  • Current Price

Additional Notes

  • The 16MB of RAM that came with the machine is soldered to the motherboard
  • Modem: 28.8k (in comm slot)
  • Supported OS: 7.5.3 - 8.1*

*More recent OS's may work but are not officially supported

SuperMac Upgrade & Troubleshooting
Discussion Forum

The Umax "C" series represented the low end of Umax's lineup. Also in the C series were the C500's which shared the same 603e processor as the C600's. The C500's, however, used a less expandable desktop form factor. The C600's had plenty of room for expansion with 4 free internal drive bays.Other offerings from Umax included the higher powered "J" and "S" series.

The C600/200 was the successor to the C600/180. The additional 20MHz only translated to an 8% improvement in the processor score. The C600 line reached its peak at 280MHz less than one year after the initial C600/180 was released.

Aimed at the user with expansion in mind, it is surprising and unfortunate that VRAM was limited to 1MB and, since it was soldered onto the logic board, was not expandable. Those wanting to use a larger monitor and/or higher resolutions would have to spring for an extra graphics card to operate at a reasonable color depth.The C600/200 also lacked on-board Ethernet.

On the positive side, the C600's, like the C500 series, came with an excellent SOHO software bundle which included; Grollier's Encyclopedia, Claris Works, Quicken, Now Utilities, Conflict Catcher and Adobe's Page Mill to name a few.

Umax later included Connectix's Virtual PC in a C600/200vPC model.

For Great Prices On Upgrades Check The Vendors Below
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The internal CD-ROM came in two different speeds, 8x on the standard C600/200 or 12x on the C600e/200. While The 1MB VRAM was not upgradeable, the L2 Cache fortunately was - to either 512k or 1MB - with offerings available from several vendors.

Umax also offered the (then) revolutionary "inline" CacheDoubler card which sat sandwiched between the processor and the ZIF slot. Like the G3's backside cache we all know and love, the CacheDoubler card allowed higher speed access to the processor than the standard L2 cache.

Currently the G3 upgrade paths for this machine is via the L2 Cache slot.

Below you will find the MacBench 4.0 results for the current processor upgrades available for this machine. Results marked in blue indicate that benchmark results were done by us. All other processor card results were provided by the upgrade manufacturer. 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

Umax C600/200 280
Sonnet Crescendo L2 G3/240/120/512K 744
Sonnet Crescendo L2 G3/300/150/512K 930
Sonnet Crescendo L2 G3/300/150/1MB 975
Sonnet Crescendo L2 G3/320/160/512K 992
Sonnet Crescendo L2 G3/320/160/1MB 1040
Sonnet Crescendo G3/L2 400/200/512K 1240
Sonnet Crescendo G3/L2 400/200/1MB 1300
Newer MAXpowr G3-L2 400/200/1MB 1415

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