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

Low End Mac Reader Specials

Download Typestyler, still the Ultimate Styling Tool for Internet, Print and Video Graphics. Works great in Classic with a Native OS X Version on the way. Free Tryout: www.typestyler.com

LA Computer Company: LA Computer Company: Specials on AppleCare, Apple Displays, MacBooks, iMac's, MacBook Pros, Laptop and iPod accessories and more. Apple A/C Adapters for laptops starting at $25.00 Call 1-800-941-7654 or Click Here.

OWC: NewerTech miniStack FireWire/USB 2.0 HD & Hub Up to 1.0TB of Performance Storage + FW/USB2 Powered Hubs - convenient & sleek 6.5" x 6.5" x 1.5" Featured: 500GB $169.99; 750GB $209.99; 1.0TB $339.99

Mac users can finally play Party Poker for Mac. Not only that, they can also learn how to play PokerStars for Mac.

Laptop Hardware Provided by TechRestore - Overnight Mac & iPod Repairs.

Compare products like desktop computers, laptops, and LCD TVs side by side! All the information and reviews to make the best purchasing decision for a new cell phone GPS products or MP3 players. The Ciao network makes searching products easy for you.

New MacPro Memory 800Mhz With Apple Spec Heat Sink 2GB $104 / 4GB $172 / 8GB $338. Click to Maximize your Macs...

The Apple Power Mac Processor Upgrade (APMPU) plugs into the processor direct slot (PDS) of the LC 475, LC 575, LC 580, LC 630, Performa 475-476, Performa 575-578, Performa 580-588, Performa 630 series, Quadra 605, and Quadra 630.

This upgrade is not compatible with the 040 PDS in the Centris line, the Quadra 610, or the Quadra 650-950. These models accept the Apple Power Mac Upgrade Card.

The APMPU was built by DayStar, which sold several versions under the PowerCard 601 name. After DayStar went out of business, Sonnet picked up their 100 MHz design and sold it as their Presto PPC upgrade, which has since been discontinued.

The APMPU requires System 7.5 or later and at least 8 MB of installed RAM.

The APMPU has a 66 MHz PowerPC 601 processor, which operates at twice the speed of the '040 processor installed in the computer it is upgrading. All three versions of the card are compatible with Mac OS 8.1; with Sonnet's drivers, their card also supports Mac OS 8.5-8.6.

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 ©1997-2008 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