Qube 340 is a performance-ready mATX case designed for strong airflow and efficient cooling in a compact footprint. Built under Cooler Master's Thermal Excellence philosophy, it supports larger GPUs and taller coolers while maintaining easy installation. As part of the Qube 340 family, it features modular design elements like flexible I/O placement and multiple orientation options for a versatile build experience.
Modular I/O Freedom: Place It Where You Want Top - Rear, Front - Top, Top - Front, and Front - Bottom.
3D-Printable Add-Ons: Customize your Qube 340 with a wide range of 3D-printable accessories, including compatible add-ons designed for the QUBE 540 ecosystem.
Generous Component Clearance: Fit high-performance hardware in a compact build with support for graphics cards up to 366 mm, including RTX 5080 | RX 9070 XT, and CPU air coolers up to 178 mm tall.
Powerful Cooling Support: A high-airflow front panel and multiple fan and radiator mounting options help keep your system running cool and smooth.
Compact Micro-ATX Design: Compact design that supports Micro-ATX and Mini-ITX motherboards with a footprint similar to a large LP record crate.
Modular Handle Placement: Portable Handles Included:
