Unofficial SuperMac Support Site

SuperMac C500/600 Upgrades

The C500 and C600 are unique among Macintosh clones. They were the first clones to use a ZIF socket for easy processor replacement. Umax made processors in speeds from 140 to 280 MHz, as well as the Cache Doubler, which provides a double-speed (80 MHz) level 2 cache.

Both the C500 and C600 are designed around a 40 MHz motherboard, limiting maximum CPU speed compared with machines such as the J700 and S900 that used Apple's daughter card socket with a 50 MHz bus.

Manufacturer CPU
Speed 		Cache
Size 		Cache
Speed 		Estimated
US Price
Phase 5
Aptus G4 		350 MHz 1 MB 175 MHz $499
Aptus G3 300 MHz 1 MB 150 MHz $299
Umax
available on close-out from Small Dog Electronics, limited supply
603e/240 240 MHz n/a n/a $29
Cache Doubler
(no CPU)
works in C500 		for 280 1 MB 80 MHz $29
for 240 1 MB 80 MHz $9

Also visit our Guide to G3 Accelerators for Level 2 Cache Slot for other upgrade options for the C500 and C600.

About LEM | Support | Usage | Privacy | Contacts

Entire Low End Mac website copyright ©1997-2008 by Cobweb Publishing, Inc., unless otherwise noted. All rights reserved. Advice presented in good faith, but what works for one may not work for all. Please report errors to .
  LINKS: We allow and encourage links to any public page as long as the linked page does not appear within a frame that prevents bookmarking it.
  Access our RSS news feed at http://lowendmac.com/feed.xml.
  Email may be published at our discretion; email addresses will not be published without permission, and we will encrypt them in hopes of avoiding spammers. If you prefer your message not be published, mark it "not for publication." Letters may be edited for length, context, and to match house style.
  PRIVACY: We don't collect personal information unless you explicitly provide it. For more details, see our Terms of Use.
  Low End Mac is an independent publication and has not been authorized, sponsored, or otherwise approved by Apple Inc. Apple, the Apple logo, Macintosh, iBook, iMac, eMac, iPod, PowerBook, MacBook, Mac Pro, Apple TV, and AirPort are registered trademarks of Apple Inc. Additional company and product names may be trademarks or registered trademarks and are hereby acknowledged.


Have a question?
Ask an expert!

Navigation

Used Mac Dealers
Apple History
Best Used Macs
Video Cards
Email Lists
InfoMac's Low
End Mac Forum

Favorite Sites

MacSurfer
MacMinute
MacInTouch
MyAppleMenu
InfoMac
Macs Only!
The Mac Observer
Accelerate Your Mac
RetroMacCast
PB Central
MacWindows
The Vintage Mac
   Museum
DealMac
DealsOnTheWeb
Mac2Sell
ramseeker
Mac Driver Museum
JAG's House
System 6 Heaven
System 7 Today
the pickle's Low-End
   Mac FAQ
Abandonware
   Petition
Mac vs. PC Info

Affiliates

The Apple Store
Mac Connection
MacMall
TechRestore
MacResQ
ExperCom
Crucial Memory
batteries.com

Advertise

All of our advertising is handled by BackBeat Media. For price quotes and advertising information, please contact at BackBeat Media (646-546-5194). This number is for advertising only.

Open Link

Problems viewing this page with Internet Explorer 5.5 or 6? It works fine in other browsers, including IE 7. We recommend Firefox for those using Windows, as it is standards based and more secure than IE 6 (and earlier). More LEM visitors use Firefox than any other browser.