ATI Radeon HD 2600 XT 256MB DDR3 Dual DVI PCI-Express x16 Graphics Video Card ATI-102-B36101-10.ATI GPU Model Number: Radeon HD 2600 XTATI Part Number: ATI-102-B36101-10Compatible Part Numbers: 102B3610110 630-9413Compatible Models: Apple Mac ProSpecifications:Interface: PCI-Express x16Chipset Manufacturer: ATIGPU: Radeon HD 2600 XTMemory Size: 256MBMemory Type: DDR3Ports:2 DVI