The Fractal Design Define S lends the appearance, sound dampening technology, and support for a wide variety of components from the Define series, while introducing a new, innovative internal layout. With the removal of a hard drive cage, the Define S offers extensive water cooling support for a case of this size, housing radiators up to 420mm in the top and 360mm in the front. It features smart reservoir brackets, drill-free reservoir mounting on the front of the motherboard tray, pre-drilled pump mounting holes on the bottom panel and comes with two Fractal Design Dynamic GP14 140mm fans. Three sturdy steel hard drive trays are included and an additional two dedicated SSD trays are placed behind the motherboard tray. The Define S provides silent computing and limitless watercooling possibilities for the PC building enthusiast.

TechPowerUp Review
"... its build quality is great, and it is the perfect basis for those enthusiasts who really need it: builders with unique cooling solutions." Full review

Hexus Review
"Define S offers enough rad-mount opportunities for extreme users, and with integrated fixings for reservoir and pump, it could become the go-to solution for enthusiasts looking to put together an elaborate liquid-cooled rig without breaking the bank... This is a solid foundation for liquid cooling, and if you choose to go down that path, the Define S should be on your shortlist." Full review

eTeknix Review
“Fractal Design have really made something special here. From the exterior, it’s as stylish and bold as any other Fractal Design chassis, but the interior is a breath of fresh air. If your next build is going to feature high-end water cooling, this is the perfect chassis for the job.” Full review