Display
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Retina 4K display
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21.5-inch (diagonal) Retina 4K display
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4096-by-2304 resolution with support for one billion colours
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500 nits brightness
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Wide colour (P3)
Processor
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3.0GHz
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3.0GHz quad‑core Intel Core i5 (Turbo Boost up to 3.5GHz)
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Configurable to 3.6GHz quad-core Intel Core i7 (Turbo Boost up to 4.2GHz)
Memory
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3.0GHz
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8GB of 2400MHz DDR4 memory
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Configurable to 16GB
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Storage
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3.4GHz
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1TB Fusion Drive
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Configurable to 256GB, 512GB, or 1TB SSD
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Graphics
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3.0GHz
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Radeon Pro 555 with 2GB of VRAM
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Audio
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Stereo speakers
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Microphone
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3.5 mm headphone jack
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Support for Apple iPhone headset with microphone
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