1. 4GB DDR5 Memory: With a core frequency of 775MHz and a memory frequency of 4800MHz, the HD6770 graphics card is fluent and can effectively meet your needs.
2. Efficient and Quiet: This gaming graphics card comes with 4GB of video storage capacity and an independent cooling fan for lower working temperature, higher efficiency, low noise and quiet working.
3. Easy to Install: High performance gaming graphics card with PCI Express 2.0 16X slot, small size, plug and play, easy to install, high performance, easy to carry and store. I/O ports: 1 x HD Multimedia Interface port, 1 x DVI port, 1 x VGA port.
4. High Performance: Full solid state capacitors, integrated thickened heat sink module, and reinforced PCB material make the game and working performance more stable. And the maximum resolution up to 2560X1600, support for DirectX 11, no external power supply. Rated power supply of 400W or more is recommended.
5. Compatible: System support for 10, for 8 8.1, for 7, for Vista, for Linux, for FreeBSD x86, for For general PC work, watching movies and making videos, it has excellent performance.

Spec:
Item Type: Gaming Graphics Card
Material: Metal, Electronic
Chip Manufacturer: ATI
Core Bitwidth: 128Bit
Graphics Card Slot: PCI Express 2.0
Interface: DVI I, VGA, HD Multimedia Interface
Memory Capacity: 4GB
Memory Type: DDR5
Memory Bitwidth: 128bit
Core Frequency: 775MHz
Memory Frequency: 4800MHz
Stream Processor Unit: 640 (pcs)
3D API: for DirectX 11

How to Use:
Install and Use.

packing list:
1 x Graphics Card
1 x Installation CD
1 x Instruction Manual