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    Home » Memory

    512MB OWC Memory Upgrade Module

    512MB PC133 168 Pin
    OWC Memory Lifetime Limited Warranty including the OWC Lifetime Advanced Replacement Program | 30 Day Money Back Guarantee
    Memory Image
    Product Specs:
    OWC Memory fully meets Apple's specifications with special attention to proper thermal specifications.
    Memory Trade in
    Save money by trading in your original chips! View available memory rebates.
    From the purchase date of qualifying memory from OWC, you have 60 days to trade-in your old memory for a cash rebate!
    Just fill out OWC's online rebate form or contact OWC Customer Service after you receive and install your new memory.
    - Please allow up to 14 Days from the time we receive your memory for testing and rebate processing.
    - The OWC Rebate is for up to the same number of memory modules purchased and must be in working order.
    Apple Computer Firmware Revision notes:
    OWC Memory has been tested and is found 100% compatible with all Apple Firmware updates. Many people have experienced problems with memory after installing this latest update, but the memory OWC is providing fully meets all Apple Specs and is not subject to these problems. Thank you for being an OWC Customer!
    This OWC Memory is compatible with... Learn how to find your Mac's model ID or PC specs
    PowerMac G4
    Power Mac G4 (QuickSilver 2002 ED)
    (August, 2002)
    Model ID: PowerMac3,5
    867MHz
    Install Videos
    PowerMac G4
    Power Mac G4 (QuickSilver 2002)
    (January, 2002)
    Model ID: PowerMac3,5
    733MHz, 800MHz, 933MHz, dual 1.0GHz
    Detailed specs
    Install Videos
    PowerMac G4
    Power Mac G4 (QuickSilver)
    (July, 2001)
    Model ID: PowerMac3,5
    733MHz, 867MHz, dual 800MHz
    Detailed specs
    Install Videos
    PowerMac G4
    Power Mac G4 (Digital Audio)
    (January, 2001)
    Model ID: PowerMac3,4
    466MHz, 533MHz, dual 533MHz, 667MHz, 733MHz
    Detailed specs
    PowerMac G4
    Power Mac G4 (Gigabit Ethernet)
    (July, 2000)
    Model ID: PowerMac3,3
    400GHz, dual 450MHz, dual 500GHz
    Detailed specs
    Install Videos
    PowerMac G4
    Power Mac G4 Cube
    (July, 2000)
    Model ID: PowerMac5,1
    450MHz, 500MHz
    Detailed specs
    Install Videos
    PowerMac G4
    Power Mac G4 (AGP Graphics)
    (September, 1999)
    Model ID: PowerMac3,1
    350MHz, 400MHz, 450GHz, 500GHz
    Detailed specs
    Install Videos
    iMac G4
    iMac G4 (17-inch Flat Panel)
    (July, 2002)
    Model ID: PowerMac4,5
    800Mhz
    Detailed specs
    iMac G4
    iMac G4 (15-inch Early 2003)
    (February, 2003)
    Model ID: PowerMac4,2
    800Mhz
    Detailed specs
    iMac G4
    iMac G4 (Flat Panel)
    (January, 2002)
    Model ID: PowerMac4,2
    700MHz, 800Mhz
    Detailed specs
    iMac G3
    iMac (Summer 2001)
    (July, 2001)
    Model ID: PowerMac4,1
    500MHz, 600Mhz, 700MHz
    Detailed specs
    iMac G3
    iMac (Early 2001)
    (Febuary, 2001)
    Model ID: PowerMac4,1
    400MHz, 500Mhz, 600MHz
    Detailed specs
    iMac G3
    iMac (Summer 2000)
    (July, 2000)
    Model ID: PowerMac2,2
    300MHz, 400MHz, 450Mhz, 500Mhz
    Detailed specs
    iMac G3
    iMac (Slot Loading)
    (October, 1999)
    Model ID: PowerMac2,1
    350MHz, 400MHz
    Detailed specs
    eMac May 2003
    eMac (ATI Graphics)
    (May, 2003)
    Model ID: PowerMac4,4
    800MHz, 1.0GHz
    Detailed specs
    Install Videos
    eMac April 2002
    eMac
    (April, 2002)
    Model ID: PowerMac4,4
    700MHz, 800MHz
    Detailed specs
    Install Videos
    PC Desktop
    PC Desktops
    Compatible with Intel / AMD Process based PCs capable with the specifications listed above. Memory complies with JEDEC Specifications, document JESD79-3B.

    Customer Ratings

    Write a Review 4.9 / 5 10 out of 10 (100%) reviewers would recommend this product
    Verified Buyer
    Reviewer: grouch0 Age: Over 65 Experience Level: IT Professional Owned Product: less than a month
    Rating: 5/5 Install it and it works September 4, 2017 Three old Macs have a new lease on life since I installed these memory upgrades into two of them and consolidated the old replaced memory in another. I can update the OSes to something more modern and usable now.

    I would recommend this item to a friend! Customer Videos:

    Verified Buyer
    Reviewer: FlashGordon54 Location: Suisse Age: 55-65 Experience Level: Home User Owned Product: less than a month
    Rating: 4/5 Good quality November 28, 2016 Received in time, well packed, good quality.

    I would recommend this item to a friend! Customer Videos:

    Verified Buyer
    Reviewer: Spylyxy
    Rating: 5/5 Better than i expected November 27, 2016 i upgraded my power mac g4 Sawtooth up to 2gb Ram and its works since the cpu was upgraded to 1.4ghz

    I would recommend this item to a friend! Customer Videos:

    Verified Buyer Top 250 Contributor
    Reviewer: Anonymous Location: New York, NY Age: Over 65 Experience Level: Home User Owned Product: 1-3 months
    Rating: 5/5 RAM doing the job beautifully July 2, 2015 This RAM was bought to upgrade an old PowerMac G4 Digital Audio 733MHz tower, so it could run OS X 10.3. Instructions were clear, no problem installing. G4 is running fine over a month later.

    I would recommend this item to a friend!

    Verified Buyer Top 250 Contributor
    Reviewer: Anonymous Location: Austria Age: 35-44 Experience Level: Power User Owned Product: 3-4 months
    Rating: 5/5 iMac G4 800 MHz December 22, 2014 Works perfectly

    I would recommend this item to a friend!

    Verified Buyer Top 250 Contributor
    Reviewer: Anonymous Location: Crestline, CA Age: 35-44 Experience Level: Home User Owned Product: 1-3 months
    Rating: 5/5 Doubled Memory October 18, 2014 This doubled my eMac's memory. It kept it alive for a couple more years.

    I would recommend this item to a friend!

    Verified Buyer
    Reviewer: Anonymous Location: cortez,co Age: Over 65 Experience Level: Home User Owned Product: 1-3 months
    Rating: 5/5 memory works great October 9, 2014 512mb memory module for imac. installed o.k. in system and no problems. great product

    I would recommend this item to a friend!

    Verified Buyer
    Reviewer: Anonymous Location: San Juan, PR
    Rating: 5/5 Very good May 23, 2014 I would recommend this item to a friend!
    Verified Buyer
    Reviewer: Anonymous Location: Waiheke, Aotearoa/New Zealand Age: 45-54 Experience Level: Hobbiest Owned Product: less than a month
    Rating: 5/5 Fantastic service. August 5, 2013 Hey. Want to give a big shout out to OWC. My order arrived in NZ within 12 days at the lowest shipping cost I have ever been charged for anything ex USA. I normally use a mail forwarding service, minimum charge $16 NZD because of the outrageous freight most US companies charge. But not OWC. $2.99 direct to my door. Thanks guys, will use and recommend y'all again and again.

    I would recommend this item to a friend!

    Verified Buyer
    Reviewer: G3Fan Location: Scotland Age: 25-34 Experience Level: IT Professional Owned Product: less than a month
    Rating: 5/5 Perfect September 25, 2011 I bought two of these sticks to upgrade my iMac G3 DV+ (Ruby). I didn't realise that not all SDRAM memory is compatible with the system, and found it very difficult to get guaranteed Apple compatible memory anywhere in the UK. However, these chips work perfectly and the system now runs Tiger very smoothly indeed.

    Even more impressively, it was cheaper to buy these and have them shipped across the Atlantic than to buy them in the UK! Even with the cheapest USPS postage option delivery was very quick and the online chat support outstanding.

    A fantastic experience and incredible value. I shall definitely be buying everything for my Macs from OWC from now on!

    I would recommend this item to a friend!

    OWC Memory 512MB 512MB PC133 Mfr P/N: 133SD512328 OWC SKU: OWC133SD512328 OWC Memory Upgrade Module Lifetime OWC Limited Warranty Ships: Same Day
    Reviews (10)
    only $15.99
    Add to CartOther World Computing 133SD512328 In Stock, Click to Buy Now