Yeston RX550-4G D5 Graphics Card Gaming Graphic Card with 4GB GDDR5 128Bit Memory 1183MHz/6000MHz DP+HDMI+DVI-D Output Ports Features: Greater Gaming Experience 4GB GDDR5 memory and 128Bit memory bandwidth, deliver smoother gaming experience. 6000 MHz Speed GDDR5 high-speed video memory ensures up to 6000 MHz speed, for smooth gaming and application using experience. 4K HD Resolution Supports for 4K H264, H265/HEVC encoding/decoding, and delivers Blu-ray 1080P, 4K resolution film experience at 60Hz. High-efficient Cooling Large-size auto-regulated fan and large area aluminum fin heatsink delier greater airflow performance, and provide a cool and quiet gaming experience.  Small Size Only 145mm in length, it is so small to adapt to the mainstream ITX computer cases, and allows you to build your HTPC with the great ability of gaming. Specification: Brand: Yeston  Model: RX550-4G D5 Processing Unit: AMD Radeon RX 550 Interface: PCI-E 3.0 Cores: 512 units Core Clock: 1183MHz Memory Clock Speed: 6000MHz  Memory: 4GB GDDR5 128Bit Output: DP+HDMI+DVI-D 4K Resolution: Supported AMD Eyefinity Technology: Support Direct X Version: Support 12 Open GL Version: Support 4.5 Vulkan API: Support Radeon FreeSync Technology: Support Power Consumption: 50W Recommended PSU: 300W Item size: 14.5 * 10.5 * 3.9cm / 5.71 * 4.13 * 1.54in Packing list: 1 * Graphics Card 1 * User Manual