The Fractal Design Core 3000 USB 3.0 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 480mm x 200mm x 444mm.

The Fractal Design Core 3000 USB 3.0 has seven 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 two 5.25" drive bays, which There are no 5.25" drive bays, but there are one 3.5" drive bay, which is quite a small amount of space, and there are no 2.5" drive bays to make up for it.

Made primarily of Aluminium, the Fractal Design Core 3000 USB 3.0 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.