iMac (Retina 5K, 27-inch, Late 2015) - Technical Specifications

Display

• 27-inch (diagonal) Retina 5K display with IPS technology
• 5120‑by‑2880 resolution with support for millions of colors

Processor

• 3.2GHz
  3.2GHz quad‑core Intel Core i5 (Turbo Boost up to 3.6GHz)
• 3.2GHz
  3.2GHz quad‑core Intel Core i5 (Turbo Boost up to 3.6GHz)
  Configurable to 4.0GHz quad-core Intel Core i7 (Turbo Boost up to 4.2GHz)
• 3.3GHz
  3.3GHz quad‑core Intel Core i5 (Turbo Boost up to 3.9GHz)
  Configurable to 4.0GHz quad-core Intel Core i7 (Turbo Boost up to 4.2GHz)

Memory

• 8GB (two 4GB) of 1867MHz DDR3 memory; four SO-DIMM slots, user accessible
  Configurable to 16GB or 32GB

Storage¹

• 3.2GHz
  1TB (7200-rpm) hard drive
  Configurable up to 3TB hard drive, 3TB Fusion Drive, or 256GB or 512GB of flash storage (SSD)
• 3.2GHz
  1TB Fusion Drive
  Configurable up to 3TB Fusion Drive or 256GB, 512GB, or 1TB of flash storage (SSD)
• 3.3GHz
  2TB Fusion Drive
  Configurable up to 3TB Fusion Drive or 256GB, 512GB, or 1TB of flash storage (SSD)

Graphics

• 3.2GHz
  AMD Radeon R9 M380 graphics processor with 2GB of GDDR5 memory
• 3.2GHz
  AMD Radeon R9 M390 graphics processor with 2GB of GDDR5 memory
• 3.3GHz
  AMD Radeon R9 M395 graphics processor with 2GB of GDDR5 memory
  Configurable to AMD Radeon R9 M395X with 4GB of GDDR5 memory

Video Support and Camera

• FaceTime HD camera
• Simultaneously supports full native resolution on the built-in display and up to two 4096-by-2160 external displays or one 5120-by-2880 dual-cable external display
• Support for extended desktop and video mirroring modes

Audio

• Stereo speakers
• Dual microphones
• 3.5 mm headphone jack 
  • Headphone/optical digital audio output (minijack)
  • Support for Apple iPhone headset with microphone

Connections and Expansion

• 3.5 mm headphone jack
• SDXC card slot
• Four USB 3 ports (compatible with USB 2)
• Two Thunderbolt 2 ports 
  • Mini DisplayPort output
  • Support for HDMI, DVI, VGA, and dual-link DVI (adapters sold separately)
• 10/100/1000BASE-T Gigabit Ethernet (RJ-45 connector)
• Kensington lock slot

Input

• Apple Magic Keyboard
  The redesigned Apple Magic Keyboard comes standard with your iMac. It’s wireless and rechargeable (so you won’t be replacing batteries), with an ultracompact, edge-to-edge design that wastes no surface space. It has full-size function keys and a lower profile that increases control and comfort. And it pairs immediately with your iMac right out of the box.
• Apple Magic Mouse 2
  The new design of Apple Magic Mouse 2 lets it glide more smoothly across your desk. And since it supports Multi-Touch, you can use simple gestures on its surface to do things such as swipe between web pages and scroll through documents. So if you prefer to use a wireless mouse but want some of the benefits of Multi-Touch, Apple Magic Mouse 2 is a great choice.
• Apple Magic Trackpad 2
  If you prefer using a trackpad, Apple Magic Trackpad 2 gives you the full range of Multi-Touch gestures and introduces Force Touch to the desktop. Sensors underneath the trackpad surface detect subtle differences in the amount of pressure you apply, bringing more functionality to your fingertips and enabling a deeper connection to your content. The new design also features a lower profile, making it even more comfortable to use.

Wireless

• Wi-Fi
  802.11ac Wi-Fi wireless networking
  IEEE 802.11a/b/g/n compatible
• Bluetooth
  Bluetooth 4.0 wireless technology

Size and Weight

• Height: 20.3 inches (51.6 cm)
• Width: 25.6 inches (65.0 cm)
• Stand depth: 8 inches (20.3 cm)
• Weight: 21 pounds (9.54 kg)²

Electrical and Operating Requirements

• Line voltage: 100–240V AC
• Frequency: 50Hz to 60Hz, single phase
• Operating temperature: 50° to 95° F (10° to 35° C)
• Relative humidity: 5% to 95% noncondensing
• Operating altitude: tested up to 10,000 feet

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 1-800-823-2775.

In the Box

• iMac with Retina 5K display
• Apple Magic Keyboard
• Apple Magic Mouse 2
• Power cord
• Lightning to USB Cable

Operating System

OS X El Capitan
Engineered to take full advantage of your Mac hardware, OS X El Capitan is designed to be as easy to use as it is beautiful to look at. It comes with an amazing collection of apps you’ll use — and love — every day. And it enables your Mac and iOS devices to work wonderfully together. Learn more

Built-in Apps³

• Photos
• iMovie
• GarageBand
• Pages
• Numbers
• Keynote
• Safari
• Mail
• Messages
• FaceTime
• Calendar
• Notes
• App Store
• iTunes
• iBooks
• Maps
• Contacts
• Reminders

Learn more

Configure to Order

Configure your iMac with these options. Looking for an iMac you can mount on a wall or an adjustable arm? Choose an iMac with a Built-in VESA Mount Adapter.

• 3.2GHz 
  • Apple Magic Trackpad 2
  • 16GB or 32GB memory upgrade
  • 1TB, 2TB, or 3TB Fusion Drive
  • 256GB or 512GB of flash storage (SSD)
• 3.2GHz 
  • Apple Magic Trackpad 2
  • 4.0GHz quad-core Intel Core i7 upgrade
  • 16GB or 32GB memory upgrade
  • 2TB or 3TB Fusion Drive
  • 256GB, 512GB, or 1TB of flash storage (SSD)
• 3.3GHz 
  • Apple Magic Trackpad 2
  • 4.0GHz quad-core Intel Core i7 upgrade
  • 16GB or 32GB memory upgrade
  • AMD Radeon R9 M395X upgrade
  • 3TB Fusion Drive
  • 256GB, 512GB, or 1TB of flash storage (SSD)

iMac and the Environment

Apple takes a complete product life cycle approach to determining our environmental impact. Learn more

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

• BFR-free
• PVC-free⁴
• Beryllium-free
• Mercury-free LED-backlit display
• Highly recyclable aluminum and glass enclosures
• Meets ENERGY STAR Version 6.1 requirements
• Rated EPEAT Gold⁵

Apple and the Environment
Learn more about Apple’s dedication to reducing the environmental impact of our products and process. Or read our Product Environmental Reports for detailed information on the environmental performance of every Apple product.

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

Acoustic Performance

Declared noise emission values in accordance with ECMA-109

1. L_WA,m is the mean A-weighted sound power level, rounded to the nearest 0.05 B.
2. L_pA,m is the mean A-weighted sound pressure level measured at the operator position (rounded to the nearest 0.5 dB).
3. 1 B (bel) = 10 dB (decibel)
4. K_v is the statistical adder for computing upper-limit of A-weighted sound power level.
5. The quantity, L_WA,c (formerly called L_WAd) may be computed from the sum of L_WA,m and K_V.
6. The Wireless web test browses 25 popular websites.
7. Configuration tested: 3.3GHz quad-core Intel Core i5 processor, 8GB memory, 2TB Fusion Drive, AMD Radeon R9 M395 graphics.

1. 1GB = 1 billion bytes and 1TB = 1 trillion bytes; actual formatted capacity less.
2. Weight varies by configuration and manufacturing process.
3. Pages, Numbers, and Keynote are free on the Mac App Store for qualifying Mac computers purchased on or after October 1, 2013. OS X Yosemite or later required. Downloading apps requires an Apple ID.
4. PVC-free AC power cord available in all regions except India and South Korea.
5. iMac achieved a Gold rating from EPEAT in the U.S. and Canada.