①. Item Type: 4GB GDDR5 Graphics Card. Material: PCB, Aluminum Alloy, ABS. Display Core: For AMD, For RADEON HD 7670. GPU: Thames Core. Process: 40nm. CUDA Core: 480 Units. Number of Transistors: 716M. Core Frequency: 650MHz. Memory Frequency: 900MHz. Video Memory Capacity: 4096MB. Video Memory Type: GDDR5. Video Memory Bit Width: 128 Bit. DirectX Version: DirectX 11. Bus Interface Type: PCI Express X16 2.1. Display Interface: HD Multimedia Interfacex1, DVIx1, VGAx1. ②. 650 MHz Core Frequency: AMD HD7670 with AMD chipset, 650 MHz core frequency, 128 bit width, 900 MHz memory frequency, high-speed memory. ③. 4 GB GDDR5: Graphics card with 4GB video storage capacity, lower operating temperature, higher efficiency, low noise and quiet operation. ④. Interface: PCI Express X16 1 graphics card slot, HD Multimedia Interfacex1, DVIx1, VGAx1 display interface, support DirectX 14. ⑤. Cooling fan: No need for additional power supply, all solid capacitors with cooling fan for effective heat dissipation. ⑥. 480 Stream Processor Unit: 480 stream processor unit, PCB, aluminum alloy and ABS material, wear-resistant and durable.