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Fractal Design Define R4 w/Window (Black Pearl) ATX Mid Tower Case

( 4.8 Average / 159 Ratings )



Fractal Design


Define R4 w/Window (Black Pearl)

Part #



ATX Mid Tower



Includes Power Supply


External 5.25" Bays


Internal 2.5" Bays


Internal 3.5" Bays


Motherboard Compatibility

ATX, Micro ATX, Mini ITX, Thin Mini ITX

Front Panel USB 3.0 Ports


Maximum Video Card Length

295mm With Drive Cages
430mm Without Drive Cages


522mm x 231mm x 464mm

Completed Builds Using This Part

See All Completed Builds


Merchant Base Promo Shipping Tax Availability Total
Ebuyer £81.30 £81.30+
Amazon UK £82.94 Free two-day shipping with Amazon Prime In stock £82.94
( 13 new from £82.94. Last updated 1 hour ago. )
Novatech £83.65 £83.65+
Eclipse Computers £88.09 In stock £88.09+
Alza £78.90 +£9.90 s/h In stock £88.80
BT Shop £84.56 +£4.66 s/h £89.22
Scan.co.uk £85.99 +£11.50 s/h In stock £97.49
Misco UK £94.74 +£5.98 s/h In stock £100.72
More Computers £109.88 +FREE s/h In stock £109.88
* 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.co.uk at the time of purchase will apply to the purchase of this product.

Price History (Excluding Tax & Combo Deals) History:


someta 18 points 25 months ago
from completed build Baby

Fairly quite (until you fill it with fans), well built, looks nice, the door is annoying though.

SniperWolfxSoF 5 points 25 months ago
from completed build SniperWolf's Updated Gaming Rig

The R4 is quite easy to build in and offers quite a bit of variation when it comes to cooling.

Dony 10 points 23 months ago
from completed build Riddick 2 (Super-Bad PC)

Would recommend this case to anyone who wants a quiet. good looking case.

mzack5020 6 points 22 months ago
from completed build My First <3

Super easy to use for building a simple build! Can't wait to see how it is when I water cool.

Kanery 11 points 21 months ago
from completed build Ein the DataDog

The Define R4 has set my standards for what a case should be. Even if the points I'm about to make will be mostly subjective, I'm confident that my enthusiasm about this case will be shared by many others.

To start, the aesthetic appeal and overall design of the case is fantastic. The windowed side panel does the case great justice, adding flare that isn't so overtly trying to impress an audience, but does give a great glimpse into the interior of a machine. In addition, the front swiveling door of the case gets a great treatment of features, with baseline ports such as USB 3.0, headphone, microphone, and power/reset button sitting well-positioned at the top.

The insides of the case let the user take full advantage of the possibility of cable management (as they rightfully ought to), by giving a good inch of room on the windowless panel side. There are plenty of loops to help pin down and fasten cables to, and the breaches are positioned well so that plugs and ports can reach anywhere while still being hidden by the left-side panel. It features a fan-controller of the front, able to fasten itself onto three fans at most, a feature that is well-appreciated if you don't want your system to handle it for you.

A great case overall. If I would have any complaints, it would be that it was larger than I expected, but that isn't necessarily a full downside either. With the choice of removing top panels for more vents, and the option to completely remove the drive cages altogether, airflow is great in this case and will help in maintaining temperatures. Nearly every part of this case was well-thought out, and will guarantee that with proper planning, cable management can be done well, and airflow will be kept quite well in this case, all while looking fantastically simple.

Netskaiper 14 points 18 months ago

Amazing case! Cable management is great, It looks good, the window lets you see inside, it's REALLY silent, has dust filters, overall a great case. Would recommend!

oknaju 17 points 16 months ago
from completed build Fujin
  • Still better than fractal design R5 for me because of price.
  • Has dust filters and they are easily removed for cleaning.
  • You can put cable in the back for better management.
  • Removable HDD bay.
  • Great airflow.
  • Wow much space
  • It's a case.
  • I wish it was less heavy because I have wimpy arms.
ODSTFreak98 10 points 16 months ago
from completed build Gaming PC 2015-16

Extremely good looking case. A bit dated now, but reliable, solid, and -SILENT-.

admiralnorman 18 points 15 months ago
from completed build Scorched Earth 3.1

Easy to work in and looks great. My only grievances are fixed with the R5 (which didn't exist when i bought this). But they would be; 1. easier mounting of SSDs behind the mobo. (you have to remove the mobo to mount them) and 2. the Power LED was blue and the brightness level of the surface of the sun. Which is why I bought the new LED.

NikkiKitten17 3 points 15 months ago
from completed build My First PC Build

Excellent case, surprised how big it is, love the window and it has great circulation, I also really like the front panel which is easy to remove for cleaning.