Features: 1.4GB DDR3 Memory: R7240 graphics card has a core frequency of 730MHz, memory frequency of 4600MHz, 4GB DDR3 memory, and good fluency. 2.Interface: Gaming graphics cards have HD Multimedia Interface, DVI interface, VGA interface, with PCI Express 3.0 16X slot, PCI Express 2.0 slot, plug and play, easy to install. 3.2560x1600 Resolution: Graphics cards with integrated thermal module and reinforced PCB material for more stable gaming and work performance, maximum resolution up to 2560x1600, support DirectX 11, no external power supply, maximum power consumption of about 30W. 4.Support System: Graphics cards support for Windows 10, for Windows 8 8.1, for Windows 7, for Windows Vista, for Linux, for FreeBSD x86. 5.Efficient and Quiet: The gaming graphics card is equipped with independent cooling fan for lower working temperature, higher efficiency, low noise and quiet working. specification:Item Type: R7240 4GB DDR3 Graphics Cards Material: Metal, Electronic Core Bit Width: 128bit Graphics Card Slot: PCI Express 2.0 Interface: 1xHD Multimedia Interface, 1xDVI interface, 1xVGA interface Memory Capacity: 4GB Memory Type: DDR3 Memory Bit Width: 128bit Core Frequency: 730MHz Memory Frequency: 4600MHz Stream Processor Unit: 320 (pcs) 3D API: For DirectX 11 PackageList:1 x GraphicsCards 1 xCD 1 xUser Manual