PowerColor Radeon HD 7850 2GB 256-Bit GDDR5 PCI Express 2.1 CrossFireX Support Video Card (AX7850 2GBD5-2DHE/OC) Core Clock: 910MHz Stream Processors: 1024 Effective Memory Clock: 1200MHz (4.8Gbps) Memory Size & Type: 2GB GDDR5 Memory Interface: 256-Bit