About this item 2 x HDMI; 1 x DVI-D; 2 x DP 256-bit Memory Bus Cooling Technology: Dual Fan. OS-Windows 10,7 Boost Clock:1366 MHz Product information Technical Details Brand ‎Sapphire Product Dimensions ‎28.58 x 8.89 x 0.1 cm; 1.04 kg Item model number ‎11265-05-20G-cr Manufacturer ‎Althon Micro Inc. Series ‎11265-05-20G Resolution ‎3840x2160 https://www.electronics70off.co.uk/products/Sapphire-11265%252d05%252d20G-Radeon-Pulse-RX-580-8GB-GDDR5-Dual-HDMI-%7B47%7D-DVI%252dD-%7B47%7D-Dual-DP-OC-with-Backplate-%28UEFI%29-PCI%252dE-Graphics-Card-Graphic-Cards-%28Renewed%29.html