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Quality Solutions. Expert Support. Since 1988.

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.
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
PowerMac G4
Power Mac G4 (QuickSilver 2002)
(January, 2002)
Model ID: PowerMac3,5
733MHz, 800MHz, 933MHz, dual 1.0GHz
PowerMac G4
Power Mac G4 (QuickSilver)
(July, 2001)
Model ID: PowerMac3,5
733MHz, 867MHz, dual 800MHz
PowerMac G4
Power Mac G4 (Digital Audio)
(January, 2001)
Model ID: PowerMac3,4
466MHz, 533MHz, dual 533MHz, 667MHz, 733MHz
PowerMac G4
Power Mac G4 (Gigabit Ethernet)
(July, 2000)
Model ID: PowerMac3,3
400GHz, dual 450MHz, dual 500GHz
PowerMac G4
Power Mac G4 Cube
(July, 2000)
Model ID: PowerMac5,1
450MHz, 500MHz
PowerMac G4
Power Mac G4 (AGP Graphics)
(September, 1999)
Model ID: PowerMac3,1
350MHz, 400MHz, 450GHz, 500GHz
iMac G4
iMac G4 (17-inch Flat Panel)
(July, 2002)
Model ID: PowerMac4,5
800Mhz
iMac G4
iMac G4 (15-inch Early 2003)
(February, 2003)
Model ID: PowerMac4,2
800Mhz
iMac G4
iMac G4 (Flat Panel)
(January, 2002)
Model ID: PowerMac4,2
700MHz, 800Mhz
iMac G3
iMac (Summer 2001)
(July, 2001)
Model ID: PowerMac4,1
500MHz, 600Mhz, 700MHz
iMac G3
iMac (Early 2001)
(Febuary, 2001)
Model ID: PowerMac4,1
400MHz, 500Mhz, 600MHz
iMac G3
iMac (Summer 2000)
(July, 2000)
Model ID: PowerMac2,2
300MHz, 400MHz, 450Mhz, 500Mhz
iMac G3
iMac (Slot Loading)
(October, 1999)
Model ID: PowerMac2,1
350MHz, 400MHz
eMac May 2003
eMac (ATI Graphics)
(May, 2003)
Model ID: PowerMac4,4
800MHz, 1.0GHz
eMac April 2002
eMac
(April, 2002)
Model ID: PowerMac4,4
700MHz, 800MHz
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 5 / 5 7 out of 7 (100%) reviewers would recommend this product
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 only $15.99
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