APPLE
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The Macintosh (mainly Mac since 1998)[1] is a family of personal computers designed, manufactured, and sold by Apple Inc. since January 1984.

The original Macintosh is the first successful mass-market personal computer to have featured a graphical user interface, built-in screen, and mouse.[2] Apple sold the Macintosh alongside its popular Apple II family of computers for almost ten years until the latter was discontinued in 1993.

Early Macintosh models were expensive,[3] hindering competitiveness in a market dominated by the much cheaper Commodore 64 for consumers, as well as the IBM Personal Computer and its accompanying clone market for businesses.[4] Although they were less expensive than the Xerox Alto and other computers with graphical user interfaces that predated the Mac. Macintosh systems were successful in education and desktop publishing, making Apple the second-largest PC manufacturer for the next decade. In the early 1990s, Apple introduced the Macintosh LC II and Color Classic which were price-competitive with Wintel machines at the time. However, the introduction of Windows 3.1 and Intel’s Pentium processor which beat the Motorola 68040 in most benchmarks, gradually took market share from Apple, and by the end of 1994 Apple was relegated to third place as Compaq became the top PC manufacturer. Even after the transition to the superior PowerPC-based Power Macintosh line in the mid-1990s, the falling prices of commodity PC components, poor inventory management with the Macintosh Performa, and the release of Windows 95 contributed to some decline of the Macintosh user base.

Upon his return, Steve Jobs led Apple to consolidate the complex line of nearly twenty Macintosh models in mid-1997 (including models made for specific regions) down to four in mid-1999: the Power Macintosh G3, iMac, 14.1″ PowerBook G3, and 12″ iBook. All four products were critically and commercially successful due to their high performance, competitive prices, and aesthetic designs, and helped return Apple to profitability. Around this time, Apple phased out the Macintosh name in favor of “Mac”, a nickname that had been in common use since the development of the first model. Since their transition to Intel processors in 2006, the complete lineup is Intel-based. Its current lineup includes four desktops (the all-in-one iMac and iMac Pro, and the desktop Mac Mini and Mac Pro), and two laptops (the MacBook Air and MacBook Pro). Its Xserve server was discontinued in 2011 in favor of the Mac Mini and Mac Pro.

Apple has developed a series of Macintosh operating systems. The first versions initially had no name but came to be known as the “Macintosh System Software” in 1988, “Mac OS” in 1997 with the release of Mac OS 7.6, and retrospectively called “Classic Mac OS“. Apple produced a Unix-based operating system for the Macintosh called A/UX from 1988 to 1995, which closely resembled contemporary versions of the Macintosh system software. Apple does not license macOS for use on non-Apple computers, however, System 7 was licensed to various companies through Apple’s Macintosh clone program from 1995 to 1997. Only one company, UMAX Technologies was legally licensed to ship clones running Mac OS 8.[5] In 2001, Apple released Mac OS X, a modern Unix-based operating system which was later rebranded to simply OS X in 2012, and then macOS in 2016. The current version is macOS Catalina, released on October 7, 2019.[6] Intel-based Macs are capable of running native third party operating systems such as Linux, OpenBSD, and Microsoft Windows with the aid of Boot Camp or third-party software. Volunteer communities have customized Intel-based macOS to run illicitly on non-Apple computers. Apple is rumored to be developing its own Apple-designed Arm processors for future Macintoshes

iMac (Retina 5K, 27-inch, 2019) – Technical Specifications

Display

  • Retina 5K display
  • 27-inch (diagonal) Retina 5K display
  • 5120‑by‑2880 resolution with support for one billion colors
  • 500 nits brightness
  • Wide color (P3)

Processor

  • 3.0GHz
    3.0GHz 6‑core Intel Core i5 (Turbo Boost up to 4.1GHz)
  • 3.1GHz
    3.1GHz 6‑core Intel Core i5 (Turbo Boost up to 4.3GHz)
    Configurable to 3.6GHz 8-core Intel Core i9 (Turbo Boost up to 5.0GHz)
  • 3.7GHz
    3.7GHz 6‑core Intel Core i5 (Turbo Boost up to 4.6GHz)
    Configurable to 3.6GHz 8-core Intel Core i9 (Turbo Boost up to 5.0GHz)

Memory

  • 3.0GHz
    8GB (two 4GB) of 2666MHz DDR4 memory; four SO-DIMM slots, user accessible
    Configurable to 16GB or 32GB
  • 3.1GHz
    8GB (two 4GB) of 2666MHz DDR4 memory; four SO-DIMM slots, user accessible
    Configurable to 16GB, 32GB, or 64GB
  • 3.7GHz
    8GB (two 4GB) of 2666MHz DDR4 memory; four SO-DIMM slots, user accessible
    Configurable to 16GB, 32GB, or 64GB

Storage1

  • 3.0GHz
    1TB Fusion Drive
    Configurable to 2TB Fusion Drive or 256GB, 512GB, or 1TB SSD
  • 3.1GHz
    1TB Fusion Drive
    Configurable to 2TB or 3TB Fusion Drive or 256GB, 512GB, or 1TB SSD
  • 3.7GHz
    2TB Fusion Drive
    Configurable to 3TB Fusion Drive or 512GB, 1TB, or 2TB SSD

Graphics

  • 3.0GHz
    Radeon Pro 570X with 4GB of GDDR5 memory
  • 3.1GHz
    Radeon Pro 575X with 4GB of GDDR5 memory
  • 3.7GHz
    Radeon Pro 580X with 8GB of GDDR5 memory
    Configurable to Radeon Pro Vega 48 with 8GB of HBM2 memory

Video Support and Camera

  • FaceTime HD camera
  • Simultaneously supports full native resolution on the built-in display at 1 billion colors and:
    • One 5120‑by‑2880 (5K) external display at 60Hz with support for 1 billion colors, or
    • Two 3840-by-2160 (4K UHD) external displays at 60Hz with support for 1 billion colors, or
    • Two 4096‑by‑2304 (4K) external displays at 60Hz with support for millions of colors
  • Thunderbolt 3 digital video output
  • Native DisplayPort output over USB‑C
  • Thunderbolt 2, HDMI, DVI, and VGA output supported using adapters (sold separately)

Audio

  • Stereo speakers
  • Microphone
  • 3.5 mm headphone jack
    • 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 3 (USB-C) ports with support for:
    • DisplayPort
    • Thunderbolt (up to 40Gb/s)
    • USB 3.1 Gen 2 (up to 10Gb/s)
    • Thunderbolt 2, HDMI, DVI, and VGA supported using adapters (sold separately)
  • 10/100/1000BASE-T Gigabit Ethernet (RJ-45 connector)
  • Kensington lock slot

Input

  • Magic Keyboard
    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 a stable scissor mechanism, optimized key travel, and a low profile that provide control and comfort. And it pairs immediately with your iMac right out of the box.
  • Magic Keyboard with Numeric Keypad
    You get all the functionality of Magic Keyboard, with an extended layout that makes it even easier to work and play. Magic Keyboard with Numeric Keypad includes document navigation controls — page up, page down, home, and end — and full-size arrow keys that are perfect for navigating pro apps, moving through spreadsheets, and playing games.
  • Magic Mouse 2
    Magic Mouse 2 comes standard with your iMac. The design of Magic Mouse 2 lets it glide 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.
  • Magic Trackpad 2
    If you prefer using a trackpad, 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. This design, along with a low profile, makes it extremely comfortable to use.

Wireless

  • Wi-Fi
    802.11ac Wi-Fi wireless networking
    IEEE 802.11a/b/g/n compatible
  • Bluetooth
    Bluetooth 4.2 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: 20.8 pounds (9.42 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

In the Box

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

Operating System

macOS
macOS is the operating system that powers every Mac. macOS Catalina gives you more of everything you love about Mac. So you can take everything you do above and beyond.
Learn more

Accessibility

Accessibility features help people with disabilities get the most out of their new iMac. With built-in support for vision, hearing, mobility, and learning, you can create and do amazing things.
Learn more

Features include:

  • Voice Control
  • VoiceOver
  • Zoom
  • Increase Contrast
  • Reduce Motion
  • Siri and Dictation
  • Switch Control
  • Closed Captions
  • Text to Speech

Built-in Apps3

  • Photos
  • iMovie
  • GarageBand
  • Pages
  • Numbers
  • Keynote
  • Siri
  • Safari
  • Mail
  • FaceTime
  • Messages
  • Maps
  • News
  • Stocks
  • Home
  • Voice Memos
  • Notes
  • Calendar
  • Contacts
  • Reminders
  • Photo Booth
  • Preview
  • Books
  • App Store
  • Time Machine
  • TV
  • Music
  • Podcasts
  • Find My
  • QuickTime Player

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

  • 3.0GHz
    • Magic Trackpad 2
    • Magic Keyboard with Numeric Keypad
    • 16GB or 32GB memory upgrade
    • 2TB Fusion Drive
    • 256GB, 512GB, or 1TB SSD
  • 3.1GHz
    • Magic Trackpad 2
    • Magic Keyboard with Numeric Keypad
    • 3.6GHz 8-core Intel Core i9 upgrade
    • 16GB, 32GB, or 64GB memory upgrade
    • 2TB or 3TB Fusion Drive
    • 256GB, 512GB, or 1TB SSD
  • 3.7GHz
    • Magic Trackpad 2
    • Magic Keyboard with Numeric Keypad
    • 3.6GHz 8-core Intel Core i9 upgrade
    • 16GB, 32GB, or 64GB memory upgrade
    • 3TB Fusion Drive
    • 512GB, 1TB, or 2TB SSD
    • Radeon Pro Vega 48 with 8GB of HBM2 memory

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:

  • Arsenic-free display glass
  • BFR-free
  • PVC-free4
  • Beryllium-free
  • Mercury-free LED-backlit display
  • Recyclable aluminum enclosure
  • Speaker enclosures made with 60 percent post‑consumer recycled plastic
  • Fan assembly made with 27 percent bio‑based plastic
  • Meets ENERGY STAR 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.

Acoustic Performance

Declared noise emission values in accordance with ECMA-109

 Sound Power Level
L W A,m (B)
Sound Pressure Level
Operator Position
L p A,m (dB)
Idle2.4 (K V = 0.3)16
Wireless web2.4 (K V = 0.3)16
Hard drive seek2.4 (K V = 0.3)16
  1. L W A,m is the mean A-weighted sound power level, rounded to the nearest 0.1 B.
  2. L p A,m is the mean A-weighted sound pressure level measured at operator position (rounded to the nearest 1 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 W A,c (formerly called L W Ad) may be computed from the sum of L W A,m and K v .
  6. The Wireless web test browses 25 popular websites.
  7. Configuration tested: 3.7GHz 6-core Intel Core i5 processor, 8GB memory, 2TB Fusion drive, Radeon Pro 580X Graphics.

  1. 1GB = 1 billion bytes and 1TB = 1 trillion bytes; actual formatted capacity less.
  2. Weight varies by configuration and manufacturing process.
  3. iMovie, GarageBand, Pages, Numbers, and Keynote are available on the Mac App Store. Downloading apps requires an Apple ID and a device that is compatible with the OS version required for each app.
  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.

Source APPLE

About the Author

Sande Kennedy is the founder and Editor in Chief of SandeKennedy.com & Kenyans247.com He is a Kenyan-based Internetprenuer,blogger Political Activist & informer who has an interest in politics, governance, corporate-fraud and human-interest. Kindly drop me a note if you feel aggrieved on any matter that you would want to be highlighted  WhatsApp: +254791890826 Read More about me here