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Fractal Design Define S black (FD-CA-DEF-S-BK)

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A classic computer case, mainly notable for its ability to provide highly efficient cooling of computer components. Despite the classic Midi Tower form factor, the Fractal Design DEFINE S system unit received an expanded volume of internal space, which allows the case to use 3 heat exchange circuits at once. For quick and easy installation of liquid radiators, special guides are provided in the case. Additionally, the system unit provides space for mounting traditional fans. In total, 9 coolers with a diameter of 120/140 mm are placed inside, but at the same time, the standard package includes 2 fans with a 140 mm impeller. The ventilation ducts that work for air intake are protected by dust filtration. In addition to good ventilation, the case allows you to mount performant computing powe...r inside. So, the system unit is designed to install an ATX motherboard or any of its junior derivatives, a graphics card up to 425 mm long can easily fit on the chassis, and the height of the processor fan can reach 180 mm. The control panel contains power buttons, mini-jack sockets and 2 USB 3.0 ports. On the basis of this system unit, it will be possible to assemble a very, very performant gaming computer.
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Fractal Design Define S black
Chassis Form Factor:Midi Tower
Motherboard size:ATX
PSU power:no PSU
Internal bays 3.5":3
Internal bays 2.5":2
Front panel:USB A 2 pcs

A classic computer case, mainly notable for its ability to provide highly efficient cooling of computer components. Despite the classic Midi Tower form factor, the Fractal Design DEFINE S system unit received an expanded volume of internal space, which allows the case to use 3 heat exchange circuits at once. For quick and easy installation of liquid radiators, special guides are provided in the case.

Additionally, the system unit provides space for mounting traditional fans. In total, 9 coolers with a diameter of 120/140 mm are placed inside, but at the same time, the standard package includes 2 fans with a 140 mm impeller. The ventilation ducts that work for air intake are protected by dust filtration. In addition to good ventilation, the case allows you to mount performant computing power inside.

So, the system unit is designed to install an ATX motherboard or any of its junior derivatives, a graphics card up to 425 mm long can easily fit on the chassis, and the height of the processor fan can reach 180 mm. The control panel contains power buttons, mini-jack sockets and 2 USB 3.0 ports. On the basis of this system unit, it will be possible to assemble a very, very performant gaming computer.

All specifications
Specifications Define S
Colour
Form factorMidi Tower
Mountvertical
Motherboard supportATX / micro-ATX, mini-ITX /
Board placementvertical
PSU form factorATX (regular)
Computer case
Dimensions (HxWxD)451x233x520 mm
Graphics card max lenght425 mm
Fan max height180 mm
Weight9.1 kg
Materialsteel
Side panelremovable
Storage
PSU
PSU mountbottom
3.5" bays3
internal 2.5" compartments2
Expansion slots7
Cooling
Installed fans2 шт
Fans (back)1x120 mm / 1x140 mm /
Fans (front)3x120 mm / 3x140 mm /
Fans (side)1x120 mm / 1x140 mm /
Fans (top)3x120 mm / 3x140 mm /
Fans (bottom)1x120 mm / 1x140 mm /
Fan mounts total9
Dust filter+
Liquid cooling system support
Liquid cooling system
Liquid cooling (front)360 mm
Liquid cooling (top)420 mm
Liquid cooling (bottom)140mm
Liquid cooling mounts3
Connectors and functions
Placementon top of the case
USB-A 5Gbps2 pcs
Audio (microphone/headphones)
More features
Front panelsolid
More featuressoundproof
hidden wiring
CPU cooling mount window
Added to E-CatalogJuly 2015
P/N
FD-CA-DEF-S-BK

The information in the model description is for reference purposes.
Always clarify the specifications and configuration of the product with the online store manager before purchasing.
Catalog Fractal Design 2026 - new arrivals, bestsellers, and the most relevant models Fractal Design.
Brief opinion.. The case will not disappoint.
10 May 2021 
I've rebuilt the system in it three or four times during operation, including completely - it's nice to work with. You can feel the quality, the thoughtfulness. I want to replace the case of the second system unit, I'm choosing. I'll most likely get the same one. The price has actually increased from 6390, but what can you do?
Spacious, convenient to do everything you may need inside. Convenient location of HDD/SSD. There is enough space behind the motherboard for wiring. Dampers on the disk trays, HDD is not heard at all. High-quality legs. Really quiet. Convenience is really in the little things. The same bolts for the side covers are not completely removed, but remain on the covers themselves, you do not need to look for where to put them and where they lie. It is not difficult, but it is not necessary. A trifle, but nice.
I have been using this one since mid-2018 and have not noticed any shortcomings yet.
Koichi “Darhel” Tanakause Fractal Design Define S more than year
I want to buy this model in white, but it is not available anywhere (maybe I am not looking well)...
19 January 2019 
Where can I buy one, but only white? I want one without any windows... So that it looks like a tank, white because I want to build a monster in white tones. It is declared as the quietest, I don't need more for my soul.
I want a white one, but otherwise... It seems cool, it’s declared to be the quietest of all that I found.
That it's black.
use Fractal Design Define S less than month
normal model, nothing special
5 October 2021 
I don't regret taking it, but I wouldn't recommend it to others.
Heavy. Finally, normal wall thickness! Very beautiful. Externally, it's a 10/10 and is about to break through the ceiling. Externally, it pleases me every time I turn on the PC. The first case that looks better than it costs. Very heavy. I consider myself a fairly strong person and am used to carrying ready-made PCs with literally one finger, but here I almost broke this finger. Very wide. This is brilliant - a lot of space for coolers for people with complexes and for VK of ANY size at all. At all. There is plenty of space in the back for cable management. Heaviness is good. Heaviness is reliable. If your case runs out of ammo, you can always hit it on the head with it.
Everything else. Few slots for disks. If you really want to go all out with RAID arrays from a pile of HDDs, this case is categorically not suitable. However, if you take 1 SSD + 2 HDDs, then there will be no problems. Or you can just plug an SSD into the motherboard. The price is quite wild, in my opinion. Although it looks low compared to its "older brothers". It is so wide that it didn't fit into the "PC compartment" in the desk. Getting a new desk for a new case was a new experience for me! No top filter. At such a price, this looks like clear sloppiness. Thrillingly vibrates with everything it can without the side panel. The worst thing is the stock fans died. If not for this, I would have given it a 5, overlooking everything else. But they died, and they died very quickly.
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