Feature: 1. 6000MHz memory clock speed brings smooth gaming and application using experience. 2. 4 HD ports support 4 screens display, and it supports three display modes-Extended mode, replication mode and integration mode. 3. 4K+HDR technology significantly improve the clearness, brightness and color of the images. 4. Support 10bit color depth, with rich color levels and natural color transition, to meet your color needs of post-pressing. 5. Support 4K/2K/1080P resolution, HD direct connection, HD to VGA and HD to DVI-D.(The adapters should support 4K/2K/1080P resolution/60Hz refresh rate) Specification: Features: 6000MHz memory clock speed brings smooth gaming and application using experience. 4 HD ports support 4 screens display, and it supports three display modes-Extended mode, replication mode and integration mode. 4K+HDR technology significantly improve the clearness, brightness and color of the images. Support 10bit color depth, with rich color levels and natural color transition, to meet your color needs of post-pressing. Support 4K/2K/1080P resolution, HD direct connection, HD to VGA and HD to DVI-D.(The adapters should support 4K/2K/1080P resolution/60Hz refresh rate) Specification: Brand: Yeston Model: RX550-4G 4HD GA Cores: 512 units Core clock: 1183MHz Memory: 4GB/128bit/GDDR5 Memory clock speed: 6000MHz Output interface: 4*HD 3D features: DirectX 12/Mantle/OpenGL 4.5 OS features: Windows 7(64)/Windows 10(64)/Ubuntu16.04(64) Interface type: PCI-Express 3.0 Item size: 16.2 * 10 * 3.8cm/6.38 * 3.94 * 1.5in Item weight: 290g/10.2oz Package List: 1 * Graphics Card 1 * Baffle 1 * User Manual Package List: 1 * Graphics Card 1 * Baffle 1 * User Manual