1、650MHz Core Frequency: For AMD HD7670 with for AMD chipset, 650MHz core frequency, 128bit bit width, 900MHz memory frequency, high speed memory. 2、4GB GDDR5: Graphics card with 4GB video storage capacity, lower operating temperature, higher efficiency, low noise and quiet operation. 3、Interface: PCI Express X16 1 graphics card slot for high performance gaming graphics card, HD Multimedia Interfacex1, DVIx1, VGAx1 display interface, support DirectX 1 4、Cooling Fan: No additional power supply required, all solidly capacitors ensure low power consumption and high performance, with a cooling fan for efficient heat dissipation. 5、480 Stream Processor Unit: 480 stream processor unit,PCB, Aluminum Alloy and ABS material, wear resistant and durable, can be used for a long time. 1 x 4GB GDDR5 Graphics Card Item Type: 4GB GDDR5 Graphics CardMaterial:PCB, Aluminum Alloy, ABSDisplay Core: For AMD for RADEON HD 7670GPU: ThamesCore Process: 40nmCUDA Core: 480 UnitsNumber of Transistors: 716MCore Frequency: 650MHzMemory Frequency: 900MHzVideo Memory Capacity: 4096MBVideo Memory Type: GDDR5Video Memory Bit Width: 128bitDirectX Version: DirectX 11Bus Interface Type: PCI Express X16 2.1Display Interface: HD Multimedia Interfacex1, DVIx1, VGAx1