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Fractal Design > 
Item#: N82E16811352038

Fractal Design Define R4 Blackout Silent ATX Mid Tower Computer Case

  • Steel ATX Mid Tower
  • 2 x USB 3.0, 2 x USB 2.0 and Audio I/O front panel ports Front Ports
  • 2 External 5.25" Drive Bays
  • 8 Internal 3.5" Drive Bays
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Learn more about the Fractal Design FD-CA-DEF-R4-BLO


Fractal Design


ATX Mid Tower
Case Material
With Power Supply
Power Supply Mounted
Motherboard Compatibility
Micro ATX / ATX / Mini-ITX
With Side Panel Window


External 5.25" Drive Bays
Internal 3.5" Drive Bays
Internal 2.5" Drive Bays
Expansion Slots

Front Ports

Front Ports
2 x USB 3.0, 2 x USB 2.0 and Audio I/O front panel ports

Cooling System

120mm Fans
Front: 1 x 120/140mm fan (included is a hydraulic bearing 140mm Silent Series R2 fan, 1000 RPM speed; 1 x 120/140mm fan (not included)

Rear: 1 x 120/140mm fan (included is a hydraulic bearing 140mm Silent Series R2 fan, 1000 RPM speed)

Top: 2 x 120/140mm fans (not included) - positions also support some models of 240 radiators, depending on configuration

Bottom: 1 x 120/140mm fan (not included)

Side: 1 x 120/140mm fan (not included)

Fan controller: 1 x Integrated fan controller for up to 3 fans (included)
140mm Fans
Side Air duct

Physical Spec



Pre-fitted with dense noise absorbing material

ModuVent System offers optimal silence and performance capabilities

2 HDD cages - 5 bay and 3 bay - 3.5" HDD/ 2.5" SSD (8 in total)

Top HDD cage (5 HDD) can be rotated 90 degrees or removed for additional airflow

2 SSDs can be installed on the back of the motherboard plate

A wider case body allows for much improved cable routing capability behind the motherboard, now 26 mm (8mm wider)

Fan controller is integrated in the front panel and supports up to 3 fans

2 All-Black Silent Series R2 ? hydraulic bearing fans with longer life time included

Top fan positions now allow slim 240/280mm radiators to be mounted

Select slim radiators can be mounted in front fan holder (requires the bottom HDD cage to change position)

New, tool-less front fan holder makes switching front fans easier

Front fan filter is now easily removed and is washable

The bottom air filter is now extended to cover the bottom fan position as well as the PSU air intake

Bottom HDD cage is fitted with screws instead of rivets and can be easily removed

Rubber grommets are improved to ensure better fit and retention

Thicker steel improves case structural rigidity

Convenient top I/0 panel for easy access

Advanced Cable Management System

Supports graphics card lengths up to 295mm with top drive cage installed

Supports graphics card lengths up to 430mm with top drive cage removed

2 x 5.25 inch bays with 5.25 -> 3.5 in converter included

Sleek all-black interior

2x USB 3.0, 2 x USB 2.0 and Audio I/O front panel ports

Fan slots: 1 x 140mm and 1 x 120/140mm - front, 1 x 140mm - side panel, 1 x 140mm - rear, 1 x 120/140mm - bottom, 2 x 120/140mm top - positions also support 240/280mm radiators
M/B compatibility - Mini ITX, Micro ATX, ATX

Quick Info


  • Limited Warranty period (parts): 1 year
  • Limited Warranty period (labor): 1 year

Customer Reviews of the Fractal Design FD-CA-DEF-R4-BLO

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  • Richard R.
  • 7/22/2014 9:11:56 AM
  • Tech Level: High
  • Ownership: less than 1 day
  • Verified Owner

5 out of 5 eggsBest case I've ever used

Pros: Solid case. Quite. Great case if you need a quite workspace. One of the best cases I've ever used.

Cons: None

Did you find this review helpful? Yes No

  • Garth C.
  • 7/21/2014 8:10:55 AM
  • Tech Level: Somewhat High
  • Ownership: 1 week to 1 month
  • Verified Owner

4 out of 5 eggsQuiet Case Has It's Flaws

Pros: Sound Dampening
Number Of 3.5/2.5 Drive Bays
Only Two 5.25 Optical Bays (Just Right)
Amount Of Fan Locations (Nice)
Included 140mm Fans (Two Of Them, In Black)

Cons: Only Two 140mm Fans Included
No HDD/SSD L.E.D on Front Panel (Who Does That?)
Power On L.E.D. Illuminates Front Lens & Power Button
Requires Screws To Mount 5.25 Optical Drives
Requires Screws To Mount 3.5/2.5 HDD Drives

Other Thoughts: This is a nice case. It's well insulated with good quality material that won't rot like the cellular foam does.

There are plenty of fan options with this case however, this case should come with at least three 140mm fans, not two. There's another issue that is old school, having to use screws to mount 5.25 Optical drives.

Most case makers now a days have the tool-less levers which seems to work just fine and control the noise/vibration. Fractal-Design should have used this feature on this case. The HDD drive bays require screws as well. Not a bad thing considering there's 7 bays with noise potential however, they should have included a tool-less design to keep up with new case designs.

Another blunder this case has right out of the box is the fact that Fractal-Design decided this case doesn't need to have a HDD L.E.D. light. There isn't one and there isn't any wiring for one. The instructions suggest one of two methods to use the single L.E.D. light which illuminates both the front lens and the top power button. One, wire the power L.E.D. cable to the power L.E.D. header on the mother board for power illumination or two, wire the power L.E.D. cable to the HDD L.E.D. header on the mother board for HDD activity. I can't understand the logic in this because I use the HDD L.E.D. to monitor what is going on with the system when its operating.

Overall, this is a great case design with the exception of the front panel L.ED.'s being limited to just one and the 5.25 drive mounts requiring screws.

My second concern about this case manufacture is their customer support. No one will answer the phone, you have to call, listen to a greeting that says, go to our website or leave a message. When going to their website, the only option for support is submitting a trouble ticket. In my recent experience, my case was shipped with defective/damaged screws right out of the plastic bag so to mount the mother board, I was limited to just 7 of the total 9 needed screws. These screws appeared to be stamped with the Phillips cross on the head as one was totally off center and the other was flattened so much, the screw head would damage the mother board. So, I called and left a message with my information and I submitted a trouble ticket. Two weeks has past, no one has contacted me. This isn't the kind of support experience I was expecting which is why this case gets just 4 of 5 eggs rating.

Did you find this review helpful? Yes No

  • Benjamin F.
  • 6/13/2014 8:19:00 AM
  • Tech Level: Somewhat High
  • Ownership: 1 week to 1 month
  • Verified Owner

5 out of 5 eggsLarger case with all teh bells and whistles

Pros: USB3.0, flat front, quality build, great support, easy to work with, cable management options.
Drive bays, expansion slots, 5.25' front covers are all removable and re-attachable and solidly built

Cons: Large. easily 40% bigger than the last case I had in order to add "cable management"
Sound padding makes little difference on overall decibels
Front panel clips arrived broken, but were replaced for free by contacting customer support.
SSD mounts behind the motherboard trays are impractical. HDD bays do not fit a "dual SSD" adapter like my old case.

Other Thoughts: This is a fun case to build with, well organized, and can hold on to all of its pieces in case i ever need to trade it in.
Be careful removing front panel as you may rip out the front panel connector wires.

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  • Mely J.
  • 5/17/2014 6:25:35 PM
  • Tech Level: Somewhat High
  • Ownership: 1 month to 1 year
  • Verified Owner

5 out of 5 eggsThe best

Pros: Exactly as described.

I've owned and worked with about 20 cases in my life, and this is by far the best. It makes cable management easy, very sturdy and built to last, and I've already recommended it multiple times to my friends for their cases.

Cons: Nothing stands out...

Other Thoughts: Watch the Newegg review video for the case.

1 out of 1 people found this review helpful. Did you? Yes No

  • Tony M.
  • 5/15/2014 7:03:45 PM
  • Tech Level: High
  • Ownership: 1 week to 1 month
  • Verified Owner

5 out of 5 eggsQuietist case I've ever owned!!

Pros: Sound dampening really works. Has enough hdd space that I'll never use. Putting together was real easy. I swear each case I own gets better and better. This case has more then enough airflow, filters, room for cables, mods, etc. Basically you can do so much for this case. I have an FT-02 Silverstone fortress for my main computer and thinking about switching over to this case.

Cons: I can hear my Corsair psu coil whine still. Not a fault of this case though.

Other Thoughts: Look, if you're overheating your gpu or cpu from overclocking ,it's not a case issue. That's the original reason I upgraded my case. I then switched out my cpu cooler to an aio, got an aftermarket Arctic cooler for my gpu, and replaced the case fans with the corsair quiet editions. This case is DEAD silent while all my components are cool. Would highly recommend.

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  • Seth L.
  • 5/10/2014 6:04:24 PM
  • Tech Level: Average
  • Ownership: 1 week to 1 month
  • Verified Owner

4 out of 5 eggsA really solid case.

Pros: + Pretty spacious on the inside, with around an inch of space behind the mainboard tray.
+ With all stock equipment, the case is quiet. Keep in mind, this is with the case down on the floor to my right.
+ Case, while heavy, feels very sturdy.
+ Pre-included vent covers are nice and add to the overall quietness of the case. Included filters are easy to use.
+ Included fans are fairly quiet for what they are.
+ Parts box with the case contains every screw for just about everything you could possibly put in here. It seems like a small thing, but you'd be surprised how many times this doesn't happen.

Cons: - Unlike their Arc Mini R2, the SSD mounts on the back of the mainboard tray are only accessible if the mainboard is not present. However, if you're using a Micro-ATX size board, one of the two SSD mounts is still reachable, so that's good.
- Once put together, the entire case can be pretty heavy, and with no handles or inserts to hold on to, could be a hassle. However, this is minor, and likely does not pertain to everyone.

Other Thoughts: At first, I was worried about airflow and temperatures, but unless you live in a mostly humid/hot area all the time, you'll have nothing to worry about. I live in the midwest where the temperatures fluctuate at the drop of a pin, so I was concerned at first.

But after using it for a while and cleaning the filters when appropriate, I haven't had any issues at all.

3 out of 3 people found this review helpful. Did you? Yes No

  • Joseph C.
  • 5/8/2014 9:27:23 PM
  • Tech Level: Average
  • Ownership: 1 week to 1 month
  • Verified Owner

5 out of 5 eggsFantastic everything

Pros: This thing is cavernous inside. It's got ample room for pretty much anything. I have a giant air cooler installed with (some) room to spare. It comes with way more HDD space than anyone would ever need. There are multiple fan slots for cooling and you can even remove the inner HDD cage(s) to increase airflow. The front door flips open and you can easily remove the fine wire mesh filter for the intake fans for cleaning. There's a ton of space behind the main compartment to hide cables. It even has a built in fan controller and two pre-installed 140mm fans. It's super heavy and foam padded for noise reduction. This is a quiet case.

Cons: Very very few cons with this. If you want to call it one, the power LEDs are very bright, but then again you can just unplug them all together.

One real(ish) con is that I could've done with more tie-down points for cable management. But that's practically a non-issue for most. I just have OCD cabling.

Other Thoughts: If you're in the market for a Mid tower quiet case, you'd be hard pressed to find anything better.

Did you find this review helpful? Yes No

  • Paul L.
  • 5/4/2014 10:24:12 AM
  • Tech Level: High
  • Ownership: 1 week to 1 month
  • Verified Owner

5 out of 5 eggsLots of Room in a Small Package + Quiet

Pros: This is a well designed case with lots of hard drive space and it's quiet. The case is wider than most which makes working with it very easy. With all the room, there is a lot more airflow which has brought the temperature down by 5C. I have a full 8 port RAID card so all the 3.5" bays are being used. If a drive were to fail, replacing it is very easy. Simply take the side off, disconnect the drive, slide out the tray, replace the drive on the tray, then slide it back into the case, and reconnect the cables.

Cons: There are two "hidden" places where you can put the SSD drives. In order to do that you have to screw the drive in behind the motherboard. If the drive fails, you have to remove the motherboard in order to replace the drive.

Other Thoughts: For the price, this is an excellent case. The front is plastic and it doesn't take much force for it to pop off. This really isn't an issue as you shouldn't be grabbing the case like this to move it around. If you are like me, and you are using all 8 3.5 bays, I would highly recommend getting an ICY DOCK ToughArmor MB994SP-4S or some other bay adapter to make it easy if your primary OS drive fails.

1 out of 1 people found this review helpful. Did you? Yes No

  • Michael K.
  • 5/1/2014 1:07:33 AM
  • Tech Level: High
  • Ownership: 1 day to 1 week
  • Verified Owner

5 out of 5 eggsA GREAT Mid Tower

Pros: Designed Very Well
The 2 Fans that are included work well vs. noise produced
Fairly silent depending on your setup
Cable Management is a BREEZE
The removable HD cages and bottum one being repositional is awesome.
Very Sturdy.
Moduvent provides the user options for more fans or to be quieter, your choice.

Cons: The bottum vent no longer comes with a Moduvent cover like my R3 did, it's just left wide open for a fan, BUT, if you have a long PSU like I do a fan will not fit properly unless you rig it.

For the most part the blacked out paint is great, but I did notice that on the 90 angles the paint is susceptible to chipping off. Maybe it was just my unit or batch but I thought I'd mention it anyway.

Despite these two nit picky cons I'm not removing an egg because the Pros are huge imo.

Other Thoughts: Upgrading to this unit from a R3 even though the changes weren't humongous was well worth it for me.

2 out of 2 people found this review helpful. Did you? Yes No

  • Jason V.
  • 4/29/2014 8:38:56 AM
  • Tech Level: High
  • Ownership: 1 week to 1 month
  • Verified Owner

5 out of 5 eggsSlick and Classy

Pros: Very well built case.
Very solid feeling.
Stock fans are quiet.
Cable management is top notch.
Filters help keep the dust out.

Overall very impressive case. I swapped cases and moving things over was very simple. Hard drive cage has padded grips to keep your drives quiet. The 3 fan speed selector works perfectly. I can dial down the noise a bit if I'm just idling and turn it up for some extra air flow when gaming.

Cons: LED is rather bright, you can opt not to connect it though. LED status light shows either power state or HD state. There are no dedicated lights for both, so you'll have to pick one or the other. Not at all a deal breaker for me, but some might be annoyed by this.

Other Thoughts: It would have been nice to have maybe one more stock fan. Not really a con, but it would have been a good addition.

I love that there are so many places to put fans. Two up top, one in the rear, one next to the power supply, one on the side for the GPU and two in the front of the case. I will be buying at least 2 more fans to get more cool air in and hot air out.

1 out of 1 people found this review helpful. Did you? Yes No

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Item#: N82E16811352038
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