Headphone/optical digital audio output (minijack).Two internal 17-watt high-efficiency amplifiers.Support for extended desktop and video mirroring modes.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.3.1GHz quad-core Intel Core i5 with 6MB on-chip shared 元 cacheĬonfigurable to 3.4GHz quad-core Intel Core i7, only at the Apple Online Store.Ĭonfigurable to 16GB, only at the Apple Online Store.Ĭonfigurable to 2TB hard drive or 256GB solid-state second drive, only at the Apple Online Store.ĪMD Radeon HD 6770M graphics processor with 512MB of GDDR5 memoryĪMD Radeon HD 6970M graphics processor with 1GB of GDDR5 memoryĬonfigurable to AMD Radeon HD 6970M with 2GB GDDR5, only at the Apple Online Store.
2.7GHz quad-core Intel Core i5 with 6MB on-chip shared 元 cache.
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