Skip to: | | - A great place to buy computers, computer parts, electronics, software, accessories, and DVDs online. With great prices, fast shipping, and top-rated customer service - Newegg shopping upgraded ™

If you are reading this message, Please click this link to reload this page.(Do not use your browser's "Refresh" button). Please email us if you're running the latest version of your browser and you still see this message. - Computer Parts, Laptops, Electronics, HDTVs, Digital Cameras and More!

Fractal Design Define R4 Black Window Silent ATX Midtower Computer Case

Sold and Shipped by Newegg

Purchases from these Sellers are generally covered under our Newegg Marketplace Guarantee.
Marketplace Seller
  • Steel ATX Mid Tower
  • 2 x USB 3.0, 2 x USB 2.0 and Audio I/O front panel ports Front Ports
  • Side Air duct
  • 2 x External 5.25" Drive Bays

  • Overview
  • Specs
  • Warranty & Returns
  • Reviews


The Define R4 is the latest in the Define series of silent computer cases. Building on the award-winning foundation of the Define R3, the R4 retains minimalistic yet elegant styling with extraordinary performance, noise reduction features, premium build quality and unparalleled value in this price range while adding a suite of innovative new features.

No longer are you forced to choose between silence and support for liquid cooling, the Define R4 offers both. Top fan positions now allow slim 240 radiators to be mounted internally and select slim radiators can also be mounted in the front fan holder. An integrated fan controller is easily accessible behind the front panel, putting fan control at your fingertips. Cable management and intelligent layout are taken to new levels with the option of mounting up to two 2.5in, SSDs on the reverse side of the motherboard tray, effectively mitigating visible cable clutter. When it comes to cable routing, the Define R4 has it covered. Over one full inch of cable routing space behind the motherboard plate has been achieved by widening the case by just 8mm.

This mid-tower case is a great choice for everything from gaming enthusiast systems to silent home theater and corporate applications. The R4 comes pre-fitted with dense noise absorbing bitumen material on the front, top and side panels. The exclusive ModuVent TM System provides three panels which also have noise-absorbing material; these panels can be removed to expose three air vents for additional fans for high air flow applications. Rubber padding on the case feet, anti-vibration pads for the power supply and HDDs also help reduce noise.

Configuration flexibility is enhanced thanks to two hard drive cages (featuring steel drive trays with black silicone mounting grommets) that support a total of eight 3.5in. HDDs or 2.5in. SSDs. The top five-bay cage is easily rotatable and removable; removing the top cage allows support for graphics cards up to 470mm in length. The bottom three-bay cage is mounted to the chassis by screws instead of rivets, allowing you to easily remove both drive cages for complete flexibility. The spacious sleek black interior can support CPU coolers up to 170mm high. If cooling becomes more of a priority, this system can support up to seven fans with removable, washable filters to provide airflow from five sides of the case. The case also includes cable routing cutouts with improved rubber grommets to ensure greater fit and retention. The bottom of the case has a filter over the power supply and 120/140mm intake fan vent which can be easily removed for cleaning.

  • newegg Fully Transparent Side Panel Window The acrylic window side panel features the same clean, Scandinavian design as the case itself, and has a completely flat outer surface without any plastic bezel or rivets, allowing you to display your setup in style.
  • newegg Optimized for Noise Reduction Pre-fitted with dense noise-absorbing material, the R4 also features ModuVent panels which prevent noise from escaping unused fan vents when silence is required. If cooling becomes more of a priority than noise reduction, the ModuVent panels can be removed to expose additional air vents for optional fans.
  • newegg Support for Liquid Cooling You no longer have to make the choice between liquid cooling and silence, the R4 offers both. Top fan positions now allow slim 240mm radiators to be mounted. Select slim radiators can be mounted in the front fan holder (requires the bottom HDD cage to change position).
  • newegg Innovative SSD Mounting Options Hide those drives! Take cable management and interior cleanliness to a whole new level. Mount up to two 2.5in, SSDs out of sight on the back side of the motherboard tray.
  • newegg Integrated Fan Controller Fan control at your fingertips. The integrated fan controller is easily accessible behind the front panel and manages up to three fans, allowing you to tailor the fan speed to your needs.
  • newegg Advanced Cable Management Over 1in. of space behind the motherboard plate means cables can be conveniently routed through five rubber grommets into a generous compartment behind the motherboard to reduce cable clutter and improve airflow.

Learn more about the Fractal Design FD-CA-DEF-R4-BL-W

Warranty, Returns, And Additional Information
  • Warranty
  • Limited Warranty period (parts): 1 year
  • Limited Warranty period (labor): 1 year
  • Read full details
  • Return Policies
    • Return for refund within: 30 days
    • Return for replacement within: 30 days
  • This item is covered by's Standard Return Policy.
Ownership: more than 1 year
Verified Owner
5/ 5
<3 5/17/2020 5:57:55 AM

Pros: <3

Overall Review: <3

Did you find this review helpful?
Ownership: more than 1 year
Verified Owner
5/ 5
Docking an egg for loud fans + other stuff to look out for. 1/18/2020 8:19:25 AM

Pros: Solid build. Lots of pros

Cons: This case has two 140mm case fans. They're both louder than I would like. I think they're louder than spec. One of them in particular makes this sort of chattering noise that's really irritating. If this is just a problem with my fan, and not all of them, I would like to RMA the fans only, if that is possible. I don't know if it is or not.
Edit: I think the fan noise went away after a while so I added the egg back.

Overall Review: So far, I think my motherboard probably does a better job of controlling fan speed than plugging the fans into the switch would, so I'm not using the switch.

There's only one led light, so you have to choose between hard drive activity or power. As far as I know, the led only has two states, on or off. I don't think it changes colors, and I've never seen it blink, though I might be able to change some motherboard settings. I chose power, but I think I'll probably switch to hard drive activity.

Did you find this review helpful?
Ownership: more than 1 year
Verified Owner
4/ 5
Good, a bit heavy 12/31/2019 7:50:15 AM

Pros: Quiet, easy to work in, customizable, comes with fans and filters.

Cons: A bit heavy, after a few years I'm missing a rubber shoe (for one of the feet) and the front filter door doesn't want to close right.

Overall Review: Fractal's stuff is pretty good, quiet, probably would be better if I bothered with liquid cooling.

Did you find this review helpful?
Ownership: more than 1 year
Verified Owner
5/ 5
Love this case 1/15/2019 9:01:47 PM

Pros: Simple, sleek, quiet, beautiful build quality. no fingerprints, No sharp edges. Tons of room. Simply a pleasure.

Cons: bottom filter can be a little hard to get to if you have a setup where you can't get to the back of the computer easily. The cable routing holes are great, but if one were to be picky they might hope for some cable tie-down points as well.

Overall Review: Sound dampening is better than I thought it would be. I could wish for a [removable?] divider that separates the power supply into it's own chamber, keeping the heat away from the rest of the system. I have no idea how this is a midtower case. If it is, it's on the large side.

I've since bought a cheaper FD case (R3?) for my son's build and I loved that too.

I know it's an old model but I just realized I never reviewed it and I simply can't stress how happy I am with this case.

Did you find this review helpful?
Ownership: more than 1 year
Verified Owner
5/ 5
Really great case! 4/16/2018 4:26:22 PM

Pros: Solid construction, very quiet, plenty of space and it looks sleek. It's heavy enough to feel solid and sturdy, but not so heavy it's cumbersome. It stays really clean too, due to the filters. I was surprised how clean my computer was when I went to upgrade a few days ago.

Cons: Nothing major. There are only 2 optical drive bays, which is fine for me since I only need 2. I was hoping for 3 so I could have a backup drive ready, but it's not a big deal at all. It's slightly bulkier than I was expecting, but not by much, so it's really a none issue.

Overall Review: I would highly recommend this case if you need a quiet desktop. I am using it as a recording studio computer and it runs quiet enough to leave it in the room. Obviously there is going to be a tiny bit of fan noise in any computer, no matter how well designed, but with this case the noise is so negligible that it's not a problem for me.

1 out of 1 people found this review helpful. Did you?
Ownership: more than 1 year
Verified Owner
5/ 5
Absolutely fantastic case 11/21/2017 7:13:50 AM

Pros: I love this case. Built my PC almost 5 years ago and have done some tweaking and upgrading and this case has been a joy to build in all along. When it came out it was chock full of innovations that are now almost standard. Newer revisions of this design have come out and reading the specs those cases are even better, but if you find a really good deal on this one it may be worth getting nonetheless.

- Modular HDD cages, all can be removed for more airflow or radiator installation
- SDD drive holders behind the motherboard
- One of the first cases with the sleek boxy look with no exposed 5.25" bays or fan vents on the front
- vertical PCI slot for controller mounting
- Excellent airflow, can mount six 140mm fans, great watercooling support. Can even mount a thick 280mm up front if you remove the HDD cages.
- Cable management is great, plenty of room behind the back panel, cutouts where they need to be, grommetted
- Classy color scheme, Fractal cases look like tuxedos.

Cons: - The acrylic window scratches easily
- No dust filter on top
- The front dust filter can be a bit fiddly to remove

Overall Review: Other case makers try to innovate, but they seem to always miss on something. Fractal cases always seem to be just right.

Did you find this review helpful?
Ownership: 1 month to 1 year
Verified Owner
5/ 5
Love it @ $80. 5/21/2017 5:03:12 PM

Pros: -Looks awesome, but understated.
-Awesome air flow.
-Silent as hell with the right set up/fans.
-Tons of space

Cons: -No cons

Did you find this review helpful?
Ownership: more than 1 year
Verified Owner
5/ 5
Fantastic Case 4/29/2017 6:47:50 AM

Pros: Best case I've ever owned or had. Roomy, quiet, mounts galore; I'm not sure what else I could ask for.

Cons: Heavy: that's how you know it has quality.

Overall Review: I will reuse this for primary builds until I or it can't.

Did you find this review helpful?
ICON Loading...
Selected Items
  • Add to Wish List Found on 2 wish lists
Are you an E-Blast Insider?
Subscribe Newegg e-Blast
Shop without retyping payment details. Secure shopping made faster.
Check out with PayPal.
Price Available at Checkout
Why can’t we show you details of this product?

Some manufacturers place restrictions on how details of their products may be communicated.

If the Adobe Reader does not appear when you click on a link for a PDF file, you can download Adobe Reader from the Adobe web site.