Apple Model # MD771LL/A, A1289, MacPro5,1, (EMC 2629) Product Specification: • Apple Mac Pro 'Twelve Core' 2.4GHz (Mid-2012/Westmere) is powered by dual 2.4 GHz Six Core 32-nm Xeon E5645 (Westmere) processors with a dedicated 256k of level 2 cache for each core and 12 MB of 'fully shared' level 3 cache per processor • Introduction Date: Mid 2012 • System Bus Speed: 6.4 GT/s 'processor interconnect speed'. • Memory installed: 16GB (PC3-10600 DDR3 ECC) 1333 MHz.
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Also See for Apple mac pro Mid 2012. Apple Apple MacBook Pro Information Manual 16 pages. Apple MacBook Pro. Processor tray. Slot 5 Slot 4 Slot 6 Slot 3 Slot 7 Slot 2 Slot 8 Slot 1. Crucial Memory and SSD upgrades - 100% Compatibility Guaranteed for Apple MacBook Pro (13-inch and 15-inch, Mid 2012) - FREE UK Delivery. The Mac Pro 'Quad Core' 3.2 (Mid-2012/Nehalem) is powered by a single 3.2 GHz Quad Core 45-nm Xeon W3565 (Nehalem) processor with a dedicated 256k of level 2 cache for each core and 8 MB of 'fully shared' level 3 cache. Feb 10, 2014 MacBook Pro (13-inch, Mid 2012) - Technical Specifications. 2.5GHz dual-core Intel Core i5 processor (Turbo Boost up to 3.1GHz) with 3MB L3 cache. MacBook Pro and the Environment. Apple takes a complete product life cycle approach to determining our environmental impact.
Maximum Ram: 128GB.Memory slots: 8 • Hard Drive: 1TB Serial ATA (3 Gb/s) 7200 rpm • Video Card:ATI Radeon HD 5770 with 1 GB of GDDR5 memory is installed in a double-wide, 16-lane PCI Express 2.0 graphics slot. The card has two Mini DisplayPorts and one dual-link DVI port. 
• Display Support:this system is capable of supporting up to six displays but notes that 'connecting more than three displays requires installation of two ATI Radeon HD 5770 video cards'. Apple also notes that there is 'a maximum of two DVI-based displays per graphics card.' By default, one ATI Radeon HD 5770 video card is installed and this default video card is capable of supporting three displays -- digital resolutions up to 2560x1600 and analog resolutions up to 2048x1536.
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• Ports: 5 USB (2.0) - 4 Firewire 800Mhz • expansion Slots: This model has four full-length PCI Express (PCIe) 2.0 expansion slots, two x16 slots and two x4 slots. In the default configuration, one PCIe 2.0 x16 slot is occupied by the graphics card. Apple also reports that 'all slots provide mechanical support for 16-lane cards' and there is a '300W combined maximum for all PCI Express slots.' • Optical Drive:slot-loading 8X 'SuperDrive' with 4X double-layer burning (DVD+R DL/DVD±RW/CD-RW) • Wireless Card: AirPort Extreme (802.11a/b/g/n) and Bluetooth 2.1+EDR standard • Apple Keyboard and Mouse included. • Mac OSX 10.11 El Capitan Installed • Pre Owned. Fully Tested. 6 Month Usedmac warranty.