How to identify iMac (Mid 2007) and later models
Summary
The popular iMac line of computers has been in existence in one form or another since 1998. In August 2007, Apple introduced an Intel-based iMac with a glossy, widescreen display and an anodized aluminum frame. In April 2008, Apple updated the iMac with faster Intel Core 2 Duo processors, 800 MHz memory, up to 2 GB memory standard, and a new graphics option. In March 2009 Apple updated the iMac with 1066 MHz DDR 3 memory, up to 4GB memory standard and supporting up to 8GB, and new graphics options. In October 2009 Apple updated the iMac with larger 21.5-inch and 27-inch displays, faster Intel Core 2 Duo and Intel Core i5 and i7 processors, 4GB memory standard and supporting up to 16GB, and new graphics options.
You can identify these iMac models in various ways. Use one of the methods below to help determine which model you have.
Products Affected
iMac (20-inch, Mid 2007), iMac (24-inch Mid 2007), iMac (21.5-inch, Late 2009), iMac (27-inch, Late 2009), iMac (24-inch, Early 2009), iMac (20-inch, Early 2009), iMac (24-inch, Early 2008), iMac (20-inch, Early 2008)
Check the part number on the box
You'll find a sticker on the outside of the original iMac packaging that lists the part number. Just match your number with one in the table below to find your iMac model. The two characters before the slash (/) vary by country, but the rest of the part number will be the same worldwide ("XX" represents the two variable characters below).
| iMac (Late 2009) | |
| MB950XX/A | iMac (21.5-inch, Late 2009) |
| MC413XX/A | iMac (21.5-inch, Late 2009) |
| MB952XX/A | iMac (27-inch, Late 2009) |
| MB953XX/A | iMac (27-inch, Late 2009) |
| iMac (Early 2009) | |
| MB417XX/A | iMac (20-inch, Early 2009) |
| MC019XX/A | iMac (20-inch, Early 2009) |
| MB418XX/A | iMac (24-inch, Early 2009) |
| MB419XX/A | iMac (24-inch, Early 2009) |
| MB420XX/A | iMac (24-inch, Early 2009) |
| MC020XX/A | iMac (24-inch, Early 2009) |
| MC021XX/A | iMac (24-inch, Early 2009) |
| MC022XX/A | iMac (24-inch, Early 2009) |
| iMac (Early 2008) | |
| MB323XX/A | iMac (20-inch, Early 2008) |
| MB324XX/A | iMac (20-inch, Early 2008) |
| MB325XX/A | iMac (24-inch, Early 2008) |
| MB388XX/A | iMac (20-inch, Early 2008) |
| MB391XX/A | iMac (20-inch, Early 2008) |
| MB393XX/A | iMac (24-inch, Early 2008) |
| MB398XX/A | iMac (24-inch, Early 2008) |
| iMac (Mid 2007) | |
| MA876XX/A | iMac (20-inch, Mid 2007) |
| MA877XX/A | iMac (20-inch, Mid 2007) |
| MA878XX/A | iMac (24-inch, Mid 2007) |
| MB199XX/A | iMac (20-inch, Mid 2007) |
| MB200XX/A | iMac (20-inch, Mid 2007) |
| MB201XX/A | iMac (24-inch, Mid 2007) |
| MB322XX/A | iMac (24-inch, Mid 2007) |
Compare details in System Profiler
From the Apple () menu, choose About This Mac. The Processor listing will show the speed of the processor followed by the processor type. For iMac (Mid 2007) and iMac (Early 2008) computers, the listing will show Intel Core 2 Duo. To determine which iMac model you have, compare your computer's technical specifications to the specifications listed below.
iMac (Late 2009)
The iMac (Late 2009) models were introduced in October 2009.
- 3.06 GHz or 3.33 GHz Intel Core 2 Duo
- 2.66 GHz Intel Core i5 or 2.8 GHz Intel Core i7
- 21.5-inch or 27-inch LCD display
- Front Side Bus Speed of 1.07 GHz
- 1066 MHz DDR3 SDRAM
iMac (Early 2009)
The iMac (Early 2009) models were introduced in March 2009.
- 2.66 GHz, 2.93 GHz, or 3.06 GHz Intel Core 2 Duo
- Front Side Bus Speed of 1.07 GHz
- 1066 MHz DDR3 SDRAM
iMac (Early 2008)
The iMac (Early 2008) models were introduced in April 2008.
- 2.4 GHz, 2.66 GHz, 2.8 GHz or 3.06 GHz Intel Core 2 Duo
- Front Side Bus Speed of 1.07 GHz
- 800 MHz DDR2 SDRAM
iMac (Mid 2007)
The iMac (Mid 2007) models were introduced in August 2007.
- 2.0 GHz, 2.4 GHz or 2.8 GHz Intel Core 2 Duo
- Front Side Bus Speed of 800 MHz
- 667 MHz DDR2 SDRAM
Check the serial number
On the bottom of your iMac stand, you'll find a label with the serial number printed on it, or from the Apple () menu, choose About This Mac. Configure To Order (CTO) models are designated with an asterisk (*). Check the last three characters on the serial number:
| iMac (Late 2009) | |
| 5PC, B9U, CY8* | iMac (21.5-inch, Late 2009) |
| 5PK*, B9S* | iMac (21.5-inch, Late 2009) |
| 5PE, 5PJ, CYB* | iMac (27-inch, Late 2009) |
| CYC*, 5PM*, 5RU* | iMac (27-inch, Late 2009) |
| iMac (Early 2008) | |
| ZE2, ZE5* | iMac (20-inch, Early 2008) |
| ZE3, ZE6* | iMac (20-inch, Early 2008) |
| ZE4, ZE7* | iMac (24-inch Early 2008) |
| iMac (Mid 2007) | |
| X85, X87* | iMac (20-inch, Mid 2007) |
| X86, X88* | iMac (20-inch, Mid 2007) |
| X89, X8A* | iMac (24-inch Mid 2007) |