iMac (21.5-inch and 27-inch, Mid 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

• 27-inch (viewable) LED-backlit glossy widescreen TFT display with support for millions of colors
• Resolution: 2560 by 1440 pixels

Processor and Memory

Powered by a quad-core Intel Core i5 or i7 processor and DDR3 memory.

Processor
2.5GHz quad-core Intel Core i5 with 6MB on-chip shared L3 cache

Processor
2.7GHz quad-core Intel Core i5 with 6MB on-chip shared L3 cache

Configurable to 2.8GHz quad-core Intel Core i7, only at the Apple Online Store.

Processor
2.7GHz quad-core Intel Core i5 with 6MB on-chip shared L3 cache

Processor
3.1GHz quad-core Intel Core i5 with 6MB on-chip shared L3 cache

Configurable to 3.4GHz quad-core Intel Core i7, only at the Apple Online Store.

Memory
4GB (two 2GB) of 1333MHz DDR3 memory

Configurable to 16GB, only at the Apple Online Store.

Storage

500GB or 1TB hard drive.¹

500GB (7200 rpm) hard drive

1TB (7200 rpm) hard drive
Configurable to 2TB hard drive or 256GB solid-state second drive, only at the Apple Online Store.

1TB (7200 rpm) hard drive
Configurable to 2TB hard drive or 256GB solid-state second drive, only at the Apple Online Store.

1TB (7200 rpm) hard drive
Configurable to 2TB hard drive or 256GB solid-state second drive, only at the Apple Online Store.

Graphics

Advanced AMD Radeon HD discrete graphics.

AMD Radeon HD 6750M graphics processor with 512MB of GDDR5 memory

AMD Radeon HD 6770M graphics processor with 512MB of GDDR5 memory

AMD Radeon HD 6770M graphics processor with 512MB of GDDR5 memory

AMD Radeon HD 6970M graphics processor with 1GB of GDDR5 memory

Configurable to AMD Radeon HD 6970M with 2GB GDDR5, only at the Apple Online Store.

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 17-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, Thunderbolt, Gigabit Ethernet.

• One Thunderbolt port on 21.5-inch iMac
• Two Thunderbolt ports on 27-inch iMac
• 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)
• IR receiver

Input

Apple Wireless Keyboard and Magic Mouse or Magic Trackpad.

Apple Wireless Keyboard
Full-size keyboard with 78 (U.S.) or 79 (ISO) keys, including 12 function keys, 4 arrow keys (inverted “T” arrangement), and embedded numeric keypad

Magic Mouse
Smooth, seamless Multi-Touch surface with support for simple gestures (scrolling and swiping). Click and double-click anywhere. Ambidextrous construction accommodates left- and right-handed users.

Magic Trackpad
Solid-state scrolling trackpad for precise cursor control; supports inertial scrolling, pinch and expand, swipe, three-finger swipe, four-finger swipe, tap, double-tap, rotate, screen zoom, scroll, click and drag, click drag and lock, secondary click A and B

Wireless

Latest Wi-Fi and Bluetooth technologies.

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

Bluetooth
Bluetooth 2.1 + EDR (Enhanced Data Rate) wireless technology

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: 20.5 pounds (9.3 kg)³

• Height: 20.4 inches (51.7 cm)
• Width: 25.6 inches (65.0 cm)
• Depth: 8.15 inches (20.7 cm)
• Weight: 30.5 pounds (13.8 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

1. L_WAd is the statistical upper-limit A-weighted sound power level (rounded to the nearest 0.1 B).
2. L_pAm 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 Wireless Keyboard
• Apple Magic Mouse
• Power cord
• Install/restore DVDs
• Printed and electronic documentation

Included Software

OS X Lion
Includes Mail, Address Book, iCal, the Mac App Store, iTunes, Safari, 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 processor, graphics, memory, and hard drive, or to swap Magic Mouse for Magic Trackpad.

• Magic Trackpad
• 8GB memory upgrade (two 4GB)

• Magic Trackpad
• 8GB memory upgrade (two 4GB)
• 16GB memory upgrade (four 4GB)
• 2TB hard drive
• 256GB solid-state second drive
• 2.8GHz quad-core Intel Core i7

• Magic Trackpad
• 8GB memory upgrade (two 4GB)
• 16GB memory upgrade (four 4GB)
• 2TB hard drive
• 256GB solid-state second drive

• Magic Trackpad
• 8GB memory upgrade (two 4GB)
• 16GB memory upgrade (four 4GB)
• 2TB hard drive
• 256GB solid-state second drive
• 3.4GHz quad-core Intel Core i7
• AMD Radeon HD 6970M with 2GB of GDDR5 memory