Vintage Macs: Centris and Quadra

PowerPC Processor Upgrades for LC PDS

Apple Power Mac Processor Upgrade
DayStar PowerCard 601
Sonnet Presto PPC 605

• Got a Quadra? Join the Vintage Macs email list.

Overview

Details, Apple

• requires "fat" System 7.5 to 8.1
• requires Apple "Power Macintosh Card" control panel
• CPU: 66 MHz PowerPC 601
• CPU speed: runs at twice speed of '040 CPU
  • 50 MHz in LC 475, Performa 475-476, Quadra 605
  • 66 MHz in 33 MHz models
• ROM: Apple PowerPC ROMs
• RAM: uses memory on computer motherboard
• L2 cache: 256 KB

Details, DayStar PowerCard 601

• requires "fat" System 7.5 to 8.1 (only certified to 7.5.1)
• requires Daystar "PowerPro" or Apple "Power Macintosh Card" control panel
• CPU: 50, 66, or 100 MHz PowerPC 601
• ROM: Apple PowerPC ROMs
• RAM: uses memory on computer motherboard
• L2 cache: 256 KB

Details, Sonnet Presto PPC 605

• requires "fat" System 7.5 to 8.1, Mac OS 8.5-8.6 with Sonnet enabler
• requires Sonnet's Mac OS Enabler software
• CPU: 100 MHz PowerPC 601
• ROM: Apple PowerPC ROMs
• RAM: uses memory on computer motherboard
• L2 cache: 256 KB

Online Resources

• Macintosh Processor Upgrade: Description, Apple TIL 16722
• Macintosh Processor Upgrade Card: Read Me, Apple TIL 73000
• Macintosh Processor Upgrade: Frequently Asked Questions, Apple TIL 16832
• DayStar Turbo 601, Apple Macintosh Processor Upgrade, and DayStar PowerCard 601, MacUser, 1995:07
• Sonnet Presto PPC, 100 MHz 601, 256 KB cache
• Unofficial PowerPro 601 Page
• Apple Power Macintosh Upgrade Card/Daystar PowerPro 601 compared, Apple TIL 14885
• Vintage Macs, the email list for 68040-based Macs
• Apple Specs Online for upgraded LC 475/Quadra 605, LC 575, LC 580, LC/Performa/Quadra 630 series

Cautions

• You must have a "fat" system installed to use a PowerPC upgrade.

About LEM | Support | Usage | Privacy | Contacts

Entire Low End Mac website copyright ©1997-2009 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  Email may be published at our discretion; email addresses will not be published without permission, and we will encrypt them in hopes of avoiding spammers. If you prefer your message not be published, mark it "not for publication."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, iPhone, PowerBook, MacBook, MagSafe, 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.

Custom Search

Navigation

Used Mac Dealers
Apple History
Video Cards
Email Lists

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
B&H
MacMall
TechRestore
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.

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.