Display
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27-inch (viewable) LED-backlit glossy widescreen TFT display with support for millions of colors
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Resolution: 2560 by 1440 pixels
Processor
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2.7GHz quad-core Intel Core i5 with 6MB on-chip shared L3 cache
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3.1GHz quad-core Intel Core i5 with 6MB on-chip shared L3 cache
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Configurable to 3.4GHz quad-core Intel Core i7, only at the Apple Online Store.
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Memory
8GB (two 2GB) of 1333MHz DDR3 memory
Configurable to 16GB, only at the Apple Online Store.
Storage1
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2.7 GHz
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500GB (7200 rpm) hard drive
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Configurable to 2TB hard drive or 256GB solid-state second drive, only at the Apple Online Store.
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3.1 GHz
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1TB (7200 rpm) hard drive
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Configurable to 2TB hard drive or 256GB solid-state second drive, only at the Apple Online Store.
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Graphics
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2.7 GHz
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AMD Radeon HD 6770M graphics processor with 512MB of GDDR5 memory
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3.1 GHz
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AMD Radeon HD 6970M graphics processor with 1GB of GDDR5 memory
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Configurable to AMD Radeon HD 6970M with 2GB GDDR5, only at the Apple Online Store.
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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 a 30-inch display (2560 by 1600 pixels) on an external display
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Support for extended desktop and video mirroring modes
Audio
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Built-in stereo speakers
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Two internal 17-watt high-efficiency amplifiers
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Headphone/optical digital audio output (minijack)
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Audio line in/optical digital audio input (minijack)
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Built-in microphone
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Support for Apple iPhone headset with microphone
Connections and Expansion
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Two Thunderbolt ports
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Mini DisplayPort output with support for DVI, VGA, and dual-link DVI (adapters sold separately)
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One FireWire 800 port; 7 watts
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Four USB 2.0 ports
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SDXC card slot
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Slot-loading 8x SuperDrive with 4x double-layer burning (DVD±R DL/DVD±RW/CD-RW)
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Audio in/out
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10/100/1000BASE-T Gigabit Ethernet (RJ-45 connector)
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IR receiver
