The Lian Li PC-7FNWX has a the ATX form factor. ATX is the most ubiquitous of case standards, providing the largest array of compatible hardware on the market. Using the ATX standard, the case can house motherboards and power supplies with form factors ATX and Micro-ATX. The dimensions of the case itself (LxWxH) are 490mm x 210mm x 470mm.

The Lian Li PC-7FNWX has eight expansion slots, so there is plenty of room for extra components, which may be a deciding factor when planning on the longevity and build type of a PC system. The case has five 5.25" drive bays, which is more than enough to house various drives, particularly optical drives. There is only one 3.5" drive bay, though, so the large number of 5.25" drive bays is a necessity. The case does have 4 2.5" drive bays, however, so you can store an SSD or laptop-sized hard disk drive separately.

Made primarily of Aluminium, the Lian Li PC-7FNWX is built to be strong, lightweight, and well-ventilated. This often comes at a price premium, but some see the benefits to be completely worth it. Whatever your case's material, it is important to keep a consistent airflow so that heat doesn't build up inside. It is therefore advised that you make use of the available built-in case fans and fan installation sections.