ATI Radeon HD 5770 Graphics Upgrade Kit for Mac Pro (Mid 2010) The ATI Radeon HD 5770 includes 1GB of GDDR5 memory, uses the PCI Express 2.0 interface and includes two Mini DisplayPorts and one dual-link DVI port. For impressive graphics processing power, the ATI Radeon HD 5770 with 1GB of GDDR5 memory is a great choice for visual creative, scientific, and technical applications. ATI Radeon HD 5770 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 Mac Pro (Mid 2010) with PCI Express 2.0 slot Mac OS X v10.6.4 or later