ASUS Prime AP303 brings smart design and powerful cooling in compact form

ASUS has introduced the Prime AP303, a compact mid-tower ATX case that proves small size can still deliver big performance. With a 44-litre frame, it offers plenty of space for powerful components while keeping everything cool and organised.

The Prime AP303 is built for users who want the best balance between size and capacity. It supports ATX power supplies up to 180 mm long and graphics cards up to 360 mm, including heavy models like the ROG Astral GeForce RTX 5090. The case even includes a strong graphics card bracket to handle the weight of large GPUs, keeping everything stable for the long run. Inside, a 34 mm-wide cable space helps keep wiring neat and tidy, while a certified internal power cable provides safe and steady power delivery.

When it comes to cooling, the Prime AP303 does not disappoint. It can hold a 360 mm radiator that’s up to 60 mm thick, making it perfect for liquid cooling setups. There are seven fan mounting points for extra airflow, ensuring high-performance parts stay cool even under heavy use. The case’s metallic mesh design improves ventilation and gives components more access to fresh air, which helps maintain performance during long gaming or work sessions.

ASUS Prime AP303 tool-free design

ASUS also made the Prime AP303 user-friendly. It comes with tool-free side panels that are easy to remove, available in either tempered glass or metal mesh. The glass panel lets you show off your RGB setup, while the mesh version boosts airflow for a cleaner, cooler build. The case comes in both black and white colour options, with matching internal cables to keep the look neat and stylish.

For connectivity, the front panel features a USB Type-C 20 Gbps port for fast data transfer, along with two USB Type-A ports and audio jacks for headphones and microphones. Placing these ports on the front makes it easy to plug in devices without reaching around the back of your PC.

Overall, the ASUS Prime AP303 combines style, space, and smart design in a compact body. It’s a great choice for builders who want a small case that can still handle powerful components while staying cool and looking good.