Fractal Design takes the concept a step further by eliminating those parts from the entire design of its Define S, while maintaining the sturdy shell upon which the company has built its reputation among some of these same enthusiast.


The best part might be that Fractal Design is not charging you to modify an existing case, but has instead deducted the cost of bays and cages from the price of a new model. Weighing in at a fairly hefty 18.2 pounds even without the weight of cages, the Define S sells for around $70.


  • Type: Middle Tower
  • Motherboard Support: ATX, Micro ATX, Mini ITX
  • Dimensions (HxWxD): 18.3″ x 9.2″ x 21.0″
  • Space Above Motherboard: 1.8″
  • Card Length: 16.8″ (w/fan)
  • Internal Bays: 18.2lbs
  • Internal Bays: 3x 3.5″, 2x 2.5″ +3(Shared on 3.5″ tray)
  • Card Slots: 7
  • Front Fans: 1x 140-mm (supports 3x 120/140mm)
  • Rear Fans: 1x 140-mm (supports 1x 120mm)
  • Top Fans: supports 4x 120-mm
  • Dampening (Front/Side/Top): Asphalt (Right-Side)

Fractal Design replaced its classic noise dampened door with a similar looking solid face panel, above which are two USB 3.0 ports, power and reset buttons, plus headphone and microphone jacks. Removable outer covers behind those ports allow full access to the internal top panel.

It is designed for lots of internal liquid cooling hardware, Fractal Design saw no need to put port holes for liquid coolers on the back of the Define S. We do not consider that a weakness, though we would have preferred to see eight expansion slots rather than the seven provided.

The Define S’ plethora of vents combine with its left side window to leave only the right panel with enough space for proper application of these sheets. This may not be the most effective location to focus its noise reduction efforts, but it is the most practical.


The Define S is solid and attractive enough to hold an “Ultimate Liquid Cooling” build.