Apple HD 5870 Graphics Upgrade Kit for Mac Pro The ATI Radeon HD 5870 includes 1GB of GDDR5 memory, uses the PCI Express 2.0 interface, and includes twoMini DisplayPorts and one dual-link DVI port. For amazing graphics processing power, the ATI Radeon HD 5870 with 1GB of GDDR5 memory is an ideal choice for visual creative, scientific, and technical applications.Features:* ATI Radeon HD 5870 includes three video ports: two Mini DisplayPorts and one dual-link DVI port. This allows you to connect the 24-inch Apple LED Cinema Display plus another Mini DisplayPort-based display, and a DVI-based display such as the 30-inch Apple Cinema HD Display. Display adapters are available to connect VGA displays.Compatibility:* Requires MacPro (Mid 2010 with 1333MHz DDR3 memory) or Mac Pro (Early 2009 with 1066MHz DDR3 memory) with PCI Express 2.0 slot; Mac OS X v10.6.4 or later.