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Fractal Design - Define S ATX Mid Tower Case

( 4.6 Average / 19 Ratings )



Fractal Design


Define S

Part #





ATX Mid Tower

Includes Power Supply


Internal 2.5" Bays


Internal 3.5" Bays


Motherboard Compatibility

ATX, Micro ATX, Mini ITX

Front Panel USB 3.0 Ports


Maximum Video Card Length

425 mm / 16.732" With Drive Cages
450 mm / 17.717" Without Drive Cages

Completed Builds Using This Part

See All Completed Builds


Merchant Base Promo Shipping Tax Availability Total
Powertop $110.99 In stock $110.99+
Canada Computers $111.99 In stock $111.99+
Newegg Canada $114.99 In stock $114.99+
Vuugo $116.50 In stock $116.50+
PC-Canada $117.99 In stock $117.99+
shopRBC $122.00 Out of stock $122.00+
Mike's Computer Shop $126.79 In stock $126.79+
Amazon Canada $129.40 In stock $129.40+
( 15 new from $111.99. Last updated 4 hours ago. )
Newegg Canada Marketplace $152.32 $152.32+
* Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon.ca at the time of purchase will apply to the purchase of this product.

Price History (Excluding Tax) History:


vagabond139 16 points 42 months ago
from completed build Windstärke V1

Its a quiet case with tons of room for activities in it like water cooling, it supports two 360MM rads and a 140MM which is a crap load of rad's for a mid tower case and will allow it to water cool just about any parts out there, there is no max gpu length really the case which is nice but a long gpu can make working with the sata ports on some motherboards hard but that should not be a issue if you do before hand. It supports up to 9 140MM fans which I find crazy for a mid tower. The only downside is that cable management can get a little tight and the lack of a optical drive but I wouldn't count that against it since you should know what you are getting into.

Pelk 11 points 42 months ago
from completed build SilentQueen

Got this case for the good H2O-compatible and for the silence, quality could be better but for this price its perfect. I have custom noise insulation in this case.

madurham84 18 points 40 months ago

Case: I cannot say enough good things about this case. I bought the version without a clear side panel because I knew I was going to build my own. The quality and functionality was perfect for my ideas. When I came up with the idea to side mount 5.25 drive bays this one fit the bill. Cables just disappear behind the case which is a lifesaver because the Aerocool and EVGA 850 G2 are akin to jelly fish with all the wires that come out of them. You can't tell with this case. Cable management is amazing, air flow is amazing, it's simply a good looking, practical and affordable case.

philliyxx 2 points 39 months ago
from completed build Second Gaming Rig

This was easily the MOST impressive component in my build. Hey it's basically what jump started me to put together a new rig. It was on sale and I needed a new case since I was fed up with my last once since the whole front IO ports didn't connect to the mobo. ( was using rear panel for everything...it suxe)

Anyways... GOD I can't brag on this case enough. EVERYTHING just fits, its a MID but has SO much room. Its sound proof, it has filters, it has good fans, everything just so intuitive like magnetic front filters, just so MANY more features.

The HDD cages that normally take up so much space were removed from this case and you mount the SSD and HDD's on the side panel. Seeing how I only going to have no more than 4 drives this was a no brainer. Who really needs a cd drive anyways? I can always get an external if I need it. Just the sexiest case ever.

cheeseandcereal 15 points 37 months ago
from completed build Gaming/Editing PC

Interesting spin on the classic Define R series of cases. I didn't use this for any watercooling, which is its one main benefit, but it worked great for normal use. The sound dampening on the side panels is thick and works decently well, and the mounting solutions for the 3.5" and 2.5" SSDs are good enough. They managed to move all of that mounting to behind the motherboard tray which leaves a huge empty space in from of your motherboard (for water cooling components), but it's kind of nice to have a little open area in front even if you aren't planning to add any water cooling there. Comes with only 2 case fans, 1 intake and 1 exhaust. I would recommend picking up another intake fan if you're gong to use this case with any hot components.

gorkti200 25 points 35 months ago
from completed build 1151 "Rey"

This case is fantastic. It looks good, it feels good. It has tons of space to work in, and still manages 5 drive locations. It comes with cable ties and has an abundance of spots to tie down additional ones. Rubber grommets. The modu-vents can be tough to remove in my experience but they're a fantastic idea. The sound dampening efforts really pay off too. Also it's so large you can fit a massive radiator up front, with push-pull, and have room to spare. My ONLY complaint is that I wish it were slightly lighter, yet it's still lighter than tons of its competition.

poison3k 13 points 35 months ago
from completed build Narcotic Suite

Best case I have every used, solid materials means its well built, fans are silent and sound proofing is good, has filters in front and underneath (they slide out for easy cleaning).

cable management is easy too. Case feels like it should be £100+

lcire 14 points 32 months ago

Amazing airflow slick silent

InputUsername 15 points 32 months ago
from completed build First build

Sleek, no-frills design. Good airflow. Plenty of space for building and cable management. Handy built-in velcro straps to aid cable management. Also provides great room for water cooling, if that's something you're interested in.

flaqueman 2 points 31 months ago
from completed build FlaquePC 2016

Beautiful and quiete case. Plenty of room and options for fan-mounting. Mine is pretty empty since I have no watercooling nor HDD/SSD but it's nice to know I can easily install watercooling without wondering if it'll fit.