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iMac (21.5-inch, Late 2011) - Technical Specifications

Display

High-resolution LED-backlit glossy widescreen display with support for millions of colors.

  • 21.5-inch (viewable) LED-backlit glossy widescreen TFT display with support for millions of colors
  • Resolution: 1920 by 1080 pixels

Processor and Memory

Powered by a dual-core Intel Core i3 processor and DDR3 memory.

Processor
3.1GHz dual-core Intel Core i3 with 3MB on-chip shared L3 cache

Memory
2GB (one 2GB) of 1333MHz DDR3 memory

Configurable to 8GB, only at the Apple Online Store.

Storage

250GB hard drive.1

250GB (7200 rpm) hard drive

Graphics

Advanced AMD Radeon HD discrete graphics.

AMD Radeon HD 6750M graphics processor with 256MB of GDDR5 memory

Video Support and Camera

Built-in FaceTime HD camera.

  • FaceTime HD camera
  • Simultaneously supports full native resolution on the built-in display and up to a 30-inch display (2560 by 1600 pixels) on an external display
  • Support for extended desktop and video mirroring modes

Audio

Built-in stereo speakers, built-in microphone, and headphone minijack.

  • Built-in stereo speakers
  • Two internal 20-watt high-efficiency amplifiers
  • Headphone/optical digital audio output (minijack)
  • Audio line in/optical digital audio input (minijack)
  • Built-in microphone
  • Support for Apple iPhone headset with microphone

Connections and Expansion

SuperDrive, SDXC card slot, audio in, audio out, USB 2.0, FireWire 800, Mini DisplayPort, Gigabit Ethernet.

  • Mini DisplayPort output with support for DVI, VGA, and dual-link DVI (adapters sold separately)
  • One FireWire 800 port; 7 watts
  • Four USB 2.0 ports
  • SDXC card slot
  • Slot-loading 8x SuperDrive with 4x double-layer burning (DVD±R DL/DVD±RW/CD-RW)
  • Audio in/out
  • 10/100/1000BASE-T Gigabit Ethernet (RJ-45 connector)

Input

Apple Wired Keyboard and Mouse.

Apple Keyboard with Numeric Keypad
The Apple Keyboard with Numeric Keypad features an elegant, ultrathin anodized aluminum enclosure; low-profile keys; and two USB 2.0 ports.

Apple Mouse
The Apple Mouse features the amazing Scroll Ball that lets you move anywhere inside a document, literally without lifting a finger. And with touch-sensitive technology concealed under the seamless top shell, you can choose either the versatility of a four-button mouse or the simplicity of a single-button beauty.

Wireless

Latest Wi-Fi technology.

Wi-Fi
802.11n Wi-Fi wireless networking;2 IEEE 802.11a/b/g compatible

Size and Weight

An all-in-one design for a small footprint.

  • Height: 17.75 inches (45.1 cm)
  • Width: 20.8 inches (52.8 cm)
  • Depth: 7.42 inches (18.85 cm)
  • Weight: 19.5 pounds (8.8 kg)3

Electrical and Operating Requirements

  • Line voltage: 100-240V AC
  • Frequency: 50Hz to 60Hz, single phase
  • Maximum continuous power: 205W (21.5-inch models); 310W (27-inch models)
  • Operating temperature: 50° to 95° F (10° to 35° C)
  • Storage temperature: -4° to 116° F (-20° to 47° C)
  • Relative humidity: 5% to 95% noncondensing
  • Maximum altitude: 10,000 feet
  • Typical acoustical performance
    • Sound pressure level (operator position): 18 dBA at idle4

Limited Warranty and Service

Your iMac comes with 90 days of free telephone support and a one-year limited warranty. Purchase the AppleCare Protection Plan to extend your service and support to three years from your computer’s purchase date. Only the AppleCare Protection Plan provides you with direct telephone support from Apple technical experts and the assurance that repairs will be handled by Apple-authorized technicians using genuine Apple parts. For more information, visit Apple support or call 800-823-2775.

Environmental Status Report

iMac is designed with the following features to reduce its environmental impact:

  • Arsenic-free display glass
  • BFR-free
  • PVC-free5
  • Mercury-free LED-backlit display
  • Highly recyclable aluminum and glass enclosures
  • Meets ENERGY STAR 5.2 requirements
  • Rated EPEAT Gold6

Apple and the Global Environment

Learn more about Apple’s dedication to reducing the environmental impact of our products and process. The Apple Product Environmental Specification details the environmental attributes of our products.

Acoustic Performance

DECLARED NOISE EMISSIONS in accordance with ISO 9296

iMac 21.5 inch
Dual-Core Intel Core i3
SPDC 3.1 GHz
Sound Power Level
LWAd (B)
1 B = 10 dB
Sound Pressure Level
Operator Position
LpAm (dB)
unit on table unit on floor
Idle 3.0 16 -
Hard drive accessing 3.0 16 -
CD drive accessing 3.3 21 -
  1. LWAd is the statistical upper-limit A-weighted sound power level (rounded to the nearest 0.1 B).
  2. LpAm is the mean A-weighted sound pressure level measured at the operator position (rounded to the nearest dB).
  3. 1 B (bel) = 10 dB (decibel).

Recycling

Apple takes a holistic view of materials management and waste minimization. Learn more about how to recycle your Mac.

In the Box

  • iMac
  • Apple Keyboard with Numeric Keypad
  • Apple Mouse
  • Power cord
  • Printed and electronic documentation

Included Software

OS X Lion
Includes Mail, Address Book, iCal, the Mac App Store, iTunes, Time Machine, FaceTime, Photo Booth, Mission Control, Launchpad, AirDrop, Resume, Auto Save, Versions, Quick Look, Spotlight, QuickTime, and more.

iLife
Includes iPhoto, iMovie, and GarageBand.

Configurable Options

Purchase from the Apple Online Store to upgrade memory.

  • 4GB memory upgrade (two 2GB)
  • 8GB memory upgrade (two 4GB)

 

Accessories

Mac Software

  • iWork
  • Aperture
  • Logic Express

Displays and Graphics

  • Apple Mini DisplayPort to DVI Adapter
  • Apple Mini DisplayPort to VGA Adapter
  • Apple Mini DisplayPort to Dual-Link DVI Adapter

AirPort and Wireless

  • Time Capsule
  • AirPort Express Base Station
  • AirPort Extreme Base Station

Other

  • AppleCare Protection Plan

  1. 1GB = 1 billion bytes and 1TB = 1 trillion bytes; actual formatted capacity less.
  2. Wireless Internet access requires a wireless access point and Internet access; fees may apply.
  3. Weight varies by configuration and manufacturing process.
  4. Acoustics measured on standard 21.5- and 27-inch iMac systems. Acoustics may vary by configuration.
  5. PVC-free AC power cord is available in the U.S., Canada, Mexico, Colombia, El Salvador, Guatemala, Panama, Peru, Puerto Rico, U.S. Virgin Islands, and Venezuela.
  6. iMac achieved a Gold rating from EPEAT in the U.S. and Canada.
Last Modified: Sep 23, 2011
  • Last Modified: Sep 23, 2011
  • Article: SP634
  • Views:

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Additional Product Support Information