Battery Cycle Count
Display
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Retina display
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15.4 – inch (diagonal) LED – backlit display with IPS technology; 2880 – by – 1800 native resolution at 220 pixels per inch with support for millions of colors
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Supported scaled resolutions:
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1920 by 1200
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1680 by 1050
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1280 by 800
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1024 by 640
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300 nits brightness
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Standard color gamut (sRGB)
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900:1 contrast ratio
Processor
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2.2GHz
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2.2GHz quad – core Intel Core i7 processor (Turbo Boost up to 3.4GHz) with 6MB shared L3 cache
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Configurable to 2.5GHz quad – core Intel Core i7 (Turbo Boost up to 3.7GHz) with 6MB shared L3 cache or 2.8GHz quad – core Intel Core i7 (Turbo Boost up to 4.0GHz) with 6MB shared L3 cache.
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2.5GHz
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2.5GHz quad – core Intel Core i7 processor (Turbo Boost up to 3.7GHz) with 6MB shared L3 cache
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Configurable to 2.8GHz quad – core Intel Core i7 (Turbo Boost up to 4.0GHz) with 6MB shared L3 cache.
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Memory
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16GB of 1600MHz DDR3L onboard memory
Storage1
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2.2GHz – 256GB
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256GB PCIe – based flash storage
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Configurable to 512GB or 1TB flash storage.
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2.5GHz – 512GB
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512GB PCIe – based flash storage
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Configurable to 1TB flash storage.
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Size and Weight
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Height: 0.71 inch (1.8 cm)
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Width: 14.13 inches (35.89 cm)
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Depth: 9.73 inches (24.71 cm)
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Weight: 4.49 pounds (2.04 kg)2
Graphics and Video Support
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Intel Iris Pro Graphics?
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2.2GHz – 256GB
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Intel Iris Pro Graphics
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2.5GHz – 512GB
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Intel Iris Pro Graphics
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AMD Radeon R9 M370X with 2GB of GDDR5 memory and automatic graphics switching
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Dual display and video mirroring: Simultaneously supports full native resolution on the built – in display and up to 3840 by 2160 pixels on up to two external displays, both at millions of colors
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Thunderbolt digital video output
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Native Mini DisplayPort output
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DVI, VGA, dual – link DVI, and HDMI output supported using Mini DisplayPort adapters (sold separately)
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HDMI video output
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Support for 1080p resolution at up to 60Hz
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Support for 3840 – by – 2160 resolution at 30Hz
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Support for 4096 – by – 2160 resolution at 24Hz
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Camera
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720p FaceTime HD camera