2.5K resolution typically refers to a display resolution of around 2560 x 1440 pixels, which is also known as QHD (Quad High Definition) or WQHD (Wide Quad High Definition). This resolution is considered very good, especially for computer monitors and laptops, providing a significant improvement in image clarity and detail over Full HD (1080p) displays. It offers a good balance between sharpness and performance, making it a popular choice for gaming, video editing, and professional work.