
iMac (Retina 5K, 27-inch, Late 2014) - Technical Specifications
Display
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27-inch (diagonal) Retina display with IPS technology;
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5120‑by‑2880 resolution with support for millions of colors
Processor
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Configurable to 4.0GHz quad-core Intel Core i7 (Turbo Boost up to 4.4GHz).
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Memory
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8GB (two 4GB) of 1600MHz DDR3 memory; four SO-DIMM slots, user accessible
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Configurable to 16GB or 32GB.
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Storage1
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1TB Fusion Drive
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Configurable to 3TB Fusion Drive or 256GB, 512GB, or 1TB of flash storage (SSD).
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Graphics
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AMD Radeon R9 M290X graphics processor with 2GB of GDDR5 memory
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Configurable to AMD Radeon R9 M295X with 4GB of GDDR5 memory.
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Video Support and Camera
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FaceTime HD camera
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Simultaneously supports full native resolution on the built-in display and up to 3840 by 2160 pixels on an external display
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Support for extended desktop and video mirroring modes
Audio
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Stereo speakers
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Dual microphones
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Headphone port
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Headphone/optical digital audio output (minijack)
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Support for Apple iPhone headset with microphone
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Connections and Expansion

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Headphone port
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SDXC card slot
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Four USB 3 ports (compatible with USB 2)
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Two Thunderbolt 2 ports
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Mini DisplayPort output
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Support for DVI, VGA, and dual-link DVI (adapters sold separately)
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10/100/1000BASE-T Gigabit Ethernet (RJ-45 connector)
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Kensington lock slot
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Wi-Fi
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802.11ac Wi-Fi wireless networking; IEEE 802.11a/b/g/n compatible
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Bluetooth
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Bluetooth 4.0 wireless technology
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Size and Weight
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Height: 20.3 inches (51.6 cm)
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Width: 25.6 inches (65.0 cm)
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Stand depth: 8 inches (20.3 cm)
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Weight: 21 pounds (9.54 kg)2