The CORSAIR iCUE 4000X RGB is an outstanding mid-tower case that excels in both aesthetics and functionality. The design is sleek and modern, with tempered glass panels that showcase your build beautifully. The RGB lighting is one of the major highlights—vibrant, customizable, and controlled effortlessly through the iCUE software. The RGB controller included with the case makes it easy to sync the lighting across all components, and the user-friendly software allows for complete customization, giving your rig a stunning visual presence.From a building perspective, cable management in the 4000X is top-notch. Corsair's thoughtful design provides ample room to route and hide cables behind the motherboard tray, keeping everything clean and organized. The RapidRoute cable management system makes it easy to build a clutter-free PC, even for less experienced builders.Mounting an AIO cooler is seamless in this case, with enough clearance for a variety of radiators and fans. The 4000X offers excellent flexibility for cooling setups, allowing you to mount radiators up to 360mm in the front or top, giving you plenty of cooling power for high-performance builds. The airflow is well-optimized despite the tempered glass front, thanks to well-placed ventilation along the sides.In terms of overall cooling capabilities, the 4000X performs remarkably well, especially when paired with an AIO cooler and a good fan setup. The case comes pre-installed with three Corsair SP RGB Elite fans, which not only add to the aesthetics but also provide solid airflow out of the box.In summary, the Corsair iCUE 4000X RGB stands out for its stunning looks, excellent cable management, easy AIO mounting, and robust cooling performance. The iCUE RGB controller and software make it a joy to use, turning your setup into a true showpiece with minimal effort.