Low-key design saves more space. This product is small in size and takes up little space. Stainless steel shackles are harder and more . This product has a very long service life. This product has very good heat dissipation performance, which can promote heat dissipation and is not easy to generate heat. It has a smaller fan hub for easier use of longer blades, and a retaining ring to increase downward air pressure. Graphics card model: GTX550Ti 4GD5 Graphics core: GTX550Ti Chip manufacturer: Video memory capacity: 4096M (4GB) Video memory type: GDDR5 Video memory bit width: 128bit Video memory frequency: 3400MHz Core frequency: 783MHz Stream Processor Unit (SP): 640 Bus interface: PCI-express 2.0 Maximum resolution: 2560x1600 DirectX support: Direct X11 Graphics card power consumption: 60W Graphics card cooling: Air cooling Output interface: -Compatible + VGA + DVI Colour: Black Material: Plastic + Aluminum Alloy Package Contents: 2 x Graphic Card(Due to different product batches, the appearance , which does not affect the use) Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.