The OCPC Radeon RX 550 4GB graphics card is ideal for entertainment and value gaming PCs. With 4K resolution support, the RX 550 is a perfect upgrade to enhance your PC's visual experience. No additional power is required, making this card ideal for small form factor systems with limited power supply options. Single Slot: The RX 550 fits a full height or small form factor system and features DisplayPort and HDMI ports in a single slot. High Speed Memory: The RX 550 uses 4GB of high bandwidth GDDR5 memory to deliver lag-free content with the highest resolution possible. Low Power: Thanks to an energy efficient design, the RX 550 requires only 50 watts of power so it can be run off the system power bus. With most systems featuring a factory-installed 350 watt or higher power supply, you don't have to purchase and install a larger power supply.