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Define XL USB 3.0 Black Pearl

As the name implies, Define XL is the larger sibling of the acclaimed and award winning Define R2/R3 case. Similar to Define R2/R3, it offers a number of interesting functions with a very stylish appearance. It's a case focused on low noise level, without neglecting other important features such as cooling, expandability and ease of use.

Key features

  • Stylish design
  • Pre-fitted with noise absorbing material
  • Configurable thermal chamber design
  • Great cooling possibilities, 3x fans included (2x 140mm, 1x 180mm)
  • 10x HDD slots
  • Unique ModuVent™ design in side panel

The XL is pre-fitted with dense noise absorbing bitumen material, covered with a soft foam texture. This material effectively absorbs noise generated by the components and fans inside. Paired with other noise preventing features such as a covered top panel with a 180mm fan mounted with an angle to blow out air in the rear and silicone grommets for hard drive mounting, the XL truly excels in delivering a low noise solution.
An important feature of the XL is the division into three thermal chamber designs. This enables the user to freely choose the best thermal configuration suited for his or her needs. First is the upper main chamber, containing most of the components, such as motherboard, ODD and one HDD cage. The main chamber is cooled by one 140mm fan in the front (included), one 120mm fan in the front (optional), one 140mm fan in the rear (included), one 120 or 140mm fan in the side panel (optional) and one 180mm fan in the top (included). The top 180mm fan is mounted with an angle, blowing out hot air through the rear side of the case. As mentioned earlier in the text, having the top covered has a clear acoustic advantage, in not letting noise emit from the top of the case. The main chamber is connected to the second thermal chamber, the PSU chamber, with a removable lid. The lid can be removed if the user wants to turn the PSU upside down, pulling out air from the main chamber. Standard and recommended configuration, though, is with the lid closed, having the PSU take in air from the bottom of the case, through the supplied filter.
The third chamber is the lower HDD chamber, consisting of room for six hard drives. This chamber is cooled by an optional 140mm fan in the front. The standard configuration is to let the air that has gone through the HDD's and therefore is hot, go out behind the right side panel (seen from the front) and out in the rear of the case. However, the user can decide to remove the dividing metal panel between the lower HDD chamber and the PSU chamber, to let the air flow over the PSU and out in the rear ventilation holes.
Another unique feature with the XL is the ModuVent™ feature, inherited from the Define R2/R3 case. This is a cover fitted with noise absorbing material, mounted in the side panel fan hole, allowing the user to choose between an optimal low noise level, having the cover mounted or optimal airflow by removing the cover and mounting a fan for intake.
Apart from all these features, XL also offers excellent cable routing possibilities, with large holes and well enoughspace for cables behind the M/B plate. The cable routing holes are covered with silicone covers, effectively hiding the cable clutter.
A fan controller, which can be mounted in an expansion slot in the rear, is included. It can control up to three fans with one knob.

Cooling system

  • 2x 140mm fans (one 140mm included, one optional) with removable and washable filters, in the front. Recommended for intake of air.
  • 1x 120mm fan optional with removable and washable filter, in the front. Recommended for intake of air.
  • 1x 180mm fan included in the top of the case. Recommended for exhaust of air.
  • 1x 140mm fan included in the rear of the case. Recommended for exhaust of air.
  • 1x 120/140mm fan optional in the side of the case. Recommended for intake of air.


  • 4x 5,25" bays, 1x 5,25" to 3,5" converter included
  • Mini-itx, micro ATX, ATX and E-ATX motherboards
  • 10x HDD trays. 4x HDD trays in the HDD cage in the main chamber. This HDD cage is removable and rotatable.(Space ~330mm with HDD Cage and without ~480mm) 6x HDD trays in the lower HDD chamber. These HDD cages are fixed.
  • A total of two 140mm fans and one 180mm fan included. Front 140mm fans are mounted with removable, washable filter. A fan controller is included, for mounting in one of the rear expansion slots.
  • Pre-fitted with dense noise absorbing material in both side panels.
  • ModuVent™ feature, allowing the user to choose between an optimal low noise level, having the cover mounted or optimal airflow by removing the cover and mounting a fan for intake.
  • Maximum PSU length: Supports PSU's with a depth of maximum circa 180mm
  • Maximum Graphic Card lenght: Supports graphic card lengths up to 330mm when removable HDD-Bay is in place
  • Maximum CPU cooler height: Supports CPU coolers with height of 180mm
  • Expansion slots: 7+1
  • On top of front panel: 2x USB 2.0, 2x USB 3.0 and Audio I/O
  • Internal USB 3.0 header
  • Case size (WxHxD): 232x560x561.3mm
  • Net weight: 17.95kg

    Additional information
    * EAN/GTIN-13: 7350041080671
    * UPC: 817301010672
    * Product code: FD-CA-DEF-XL-USB3-BL
    * Also available for System Integrators

Overclockers.ru 2012-08-30

"По результатам тестирования Fractal Design Define XL можно отнести к действительно тихим решениям. Корпус показал отличные шумовые характеристики, вплоть до почти полного снижения исходящего от «системника» шума. «Тихоманы» от него наверняка будут в восторге."

Read full review at Overclockers.ru

Ekonomika.it 2012-07-27

"Rezultatus nuspėti nesunku. Tai kokybiško metalo, su garsą ir vibraciją slopinančia medžiaga ant šoninių dangčių, puikia aušinimo sistema, filtrais, lengvai modifikuojamomis ir naudotojo reikmėms pritaikomomis erdvėmis korpuso viduje bei aušinimo vandeniu galimybe korpusas."

Read full review at Ekonomika.it


hardwaresecreats.com 2011-12-19

"We were really impressed by the Fractal Design Define XL. Its construction quality is superb, allowing you to build a high-end system with very low noise level at a very affordable price. The only real negative of this case is that you will probably need to rent a crane to put your computer on your desk after you install three video cards."

Read full review at hardwaresecreats.com


Noticais 3D 2011-11-26

"Satisfechos hemos quedado con la aparición de esta nueva marca, que deposita en la Define XL parte de su diseño y de sus intenciones. Los acabados son excelentes,"

Read full review at Noticais 3D


Dawfreak.wordpress.com 2011-11-24

"Fractal design Define XL is a most outstanding computer case, with great features it is standing up to the top high-end cases but with this price tag it is much more affordable. a small side note i have to ad that the support at Fractal Design is extremely good and professional."

Read full review at Dawfreak.wordpress.com


anssi.fi 2011-07-05

"Fractal Design Define XL on hyvä kotelo. Siinä on panostettu hiljaisuuteen ja siinä on onnistuttu todella hyvin. Ilmankierto on toteutettu hyvin ja ilmankierron muokattavuus/paranneltavuus toimii tässä kotelossa hienosti. Mahdollista on rakentaa erittäin hiljainen kokoonpano, tai todella hyvän tuuletuksen omaava kotelo"

Read full review at anssi.fi


muropaketti.com 2011-07-04

"Hyvää •Kolme esiasennettua hiljaista tuuletinta •Tuulettimien portaaton säätömahdollisuus •Värinävaimennetut kiintolevypaikat •Kiintolevypaikkojen määrä •Irrotettava ylempi kiintolevykehikko •Tuuletinpaikkojen määrä •Äänenvaimennusmateriaali •Sisätilat •Etupaneelin neljä USB-liitäntää •Hinta"

Read full review at muropaketti.com


hwupgrade.it 2011-06-27

"Define XL, chassis sviluppato da Fractal Design è una proposta caratterizzata da linee estremamente pulite e da una qualità costruttiva degna di nota: la struttura portante è decisamente solida e il sistema di montaggio, per quanto essenziale, risulta funzionale e senza complicazioni di sorta. Le finiture sono ben fatte e non sono presenti difetti di sorta. Il sistema di fissaggio di dischi e periferiche, inoltre, permette di montare senza l'ausilio di utensili ogni tipo di componente in modo veloce e semplice."

Read full review at hwupgrade.it


tomshardware.com 2011-06-06

"For that we have the second-place case, Fractal Design’s Define XL. It really surprises us that this server-sized part capable of holding ten hard drives and four optical drives is simultaneously more than 10% less expensive than SilverStone’s consumer-oriented part."

Read full review at tomshardware.com


rwlabs.com 2011-04-13

"Overall the Define XL is one of the best full tower cases we have ever reviewed and it is perhaps the best in terms of noise levels thanks to both dampening materials used."

Read full review at rwlabs.com


tweak.dk 2011-04-03

"Når dette er sagt kan vi sige at Define XL så absolut henvender sig til brugeren der ønsker et stilrent men samtidig også enormt stille kabinet, for dette er hvad Definde XL er. Under testen var det stort set umuligt at høre blæserne i kabinettet, og det var endda selvom alle kørte med fulde omdrejninger. Altså kan vi uden tvivl melde Define XL ind i gruppen af ekstremt stille kabinetter."

Read full review at tweak.dk


aphnetworks.com 2011-03-31

"All I can say is, their amazing attention to detail and quality is so blatantly obvious, it simply cannot be ignored. From the beautifully constructed exterior, to the extremely refined interior, Fractal Design has pretty much got their formula right. I simply cannot see any location where the company has attempted to cut corners in the Define XL. And the thing is, even if they have designed it for quiet computing, they have not skimped on its cooling abilities either."

Read full review at aphnetworks.com


hc.pcworld.dk 2011-03-29

"Modsat rigtigt mange kabinetter på markedet er Define XL udstyret med lydabsorberende måtter, der faktisk gjorde, at vores testmaskine gik fra at være "støjsvag" til "stille som en ninja" - den kraftige hardware til trods."

Read full review at hc.pcworld.dk


hitechlegion.com 2011-03-28

"Performance of the Fractal Design Define XL was excellent all around. Installation was very easy, cable management was top notch and cooling characteristics for all components was far above average. The sound absorbing material did its job well, making the Define XL an extremely quiet case regardless of the CPU cooler installed."

Read full review at hitechlegion.com


mikrodatorn.idg.se 2011-03-20

"Till att börja med är vi riktigt imponerade av Fractal Design Define XL som har hög kvalitet och ett riktigt bra koncept. Från testerna ser det också ut som man lyckats med sitt syfte när det gäller luftgenomströmning och ljudnivå."

Read full review at mikrodatorn.idg.se


computerbase.de 2011-03-19

"Die Schweden von Fractal Design haben mit dem „Define XL“ ganze Arbeit geleistet. Das Gehäuse bietet ein großzügiges Raumangebot, welches durch den oberen entfernbaren Festplattenkäfig auch in gewissem Umfang den eigenen Wünschen angepasst werden kann. So hat der Anwender die Qual der Wahl, ob er 45 Zentimeter für Erweiterungskarten oder lieber Platz für bis zu zehn Festplatten haben möchte. Auch Verarbeitung und Materialqualität geben keinen Grund zur Klage. Das größte Plus und gleichzeitig für viele Interessenten das Kaufargument schlechthin ist aber ganz klar die bereits integrierte Schalldämmung. Das eingesetzte Material konnte im Test durch seine hohe schalldämmende Wirkung überzeugen. Durch das hohe Eigengewicht haben auch aufkommende Vibrationen keine Chance die Seitenwände in Schwingungen zu versetzen. So ist es dann auch nicht weiter verwunderlich, dass das „Define XL“ bis jetzt eines der leisesten Gehäuse ist, die von ComputerBase getestet wurden."

Read full review at computerbase.de


PCUpdate 2011-03-11

"Thanks to its wonderful cable management, silent airflow and perfect build quality, the Define XL has many advantages and becomes a must-have."

Read full review at PCUpdate


TweakPC.de 2011-03-09

"Das Define XL bietet für seine 125 € Verkaufspreis eine komplette Dämmung – dies findet man bei der Konkurrenz meist erst bei deutlich teureren Gehäusen."

Read full review at TweakPC.de


xsreviews.co.uk 2011-03-07

""All-in-all I can’t say too many bad things about this case, except for its price which is, in my opinion, rather high. The case has a slick look, extremely handy cable management, a well-featured front panel and a ton of fan slots. The case is designed to be super silent while not losing any of the needed cooling performance; and it worked! You can safely store a(n overclocked) high-end system in this case without having to worry about product degradation due to high temperatures.""

Read full review at xsreviews.co.uk


Metku.net 2011-02-28

"Overall the Define XL proved to be a successful addition to the Fractal Design cases lineup. It's a large, stylish and quiet monolith that even comes at a very affordable price."

Read full review at Metku.net


TheSSDReviews 2011-02-11

"I wanted to spend a few weeks experimenting with this chassis before I wrote about it and must say that I haven’t really found a negative as of yet. Quite the opposite actually, I found a few unexpected qualities that that I don’t think I can do without in future cases. The case is of a solid metal that one might actually think is bulletproof and the inside surface of which is covered in a dense noise absorbing material. To add to this, the front has a very attractive cover which gives the case a very classy look once closed."

Read full review at TheSSDReviews


KitGuru.net 2011-01-27

"The thermal performance of the case is also impressive, cooling our test system very effectively and with an inaudible noise level. The latter of these is the most impressive quality for us as it really differentiates the Define XL from the competition which are far noisier on the whole."

Read full review at KitGuru.net


3dGameMan.com 2011-01-27

"YouTube video review, please see link."

Read full review at 3dGameMan.com


PCexperience.de 2011-01-27

"alter Schwede..." wäre man fast geneigt zu schwadronieren, das Gehäuse aus Skandivavien hat es wirklich in sich und das im wahrsten Sinne seiner Bedeutung."

Read full review at PCexperience.de


techPowerUp.com 2011-01-26

"The Define XL may just look like a simple size increase of the Define R3 and from an outside perspective it actually is. It is a bit wider, a bit taller and comes with more external drive bays and a larger number of USB 2.0 connectors, but retains the exact look and feel of the Define R3. Once you look at the interior there are a few noteworthy differences which are mainly enabled due to the overall size of the chassis. All of these internal changes are for the better and should present a great argument for those looking to go for a full size chassis and are eyeing the competition."

Read full review at techPowerUp.com


Moddingtect.de 2011-01-20

"Bei dem Define XL wurden die bereits aus den Vorgänger-Gehäusen bewährten Features beibehalten, und konsequent verbessert. Es eignet sich durch seine Größe und seine vielfältig anpassbares Kühlkonzept für viele Anforderungen. Ein leiser Büro- bzw. Arbeits-PC mit viel Platzbedarf lässt sich ebenso realisieren wie ein Server oder ein High-End Zocker PC."

Read full review at Moddingtect.de


PCTuner.net 2011-01-13

"Tutto questo poi assume una valenza ancora maggiore se si pensa che il Define XL Black Pearl viene proposto a un prezzo di circa 158 € IVA inclusa, inferiore a quello di molti prodotti simili. In sostanza si tratta di un prodotto privo di sostanziali punti deboli, che offre tantissima qualità a un prezzo davvero interessante, senza contare l’esclusività di avere un prodotto molto bello e ancora non particolarmente diffuso, che non mancherà quindi di soddisfare quanti lo dovessero acquistare."

Read full review at PCTuner.net

Award from pcmweb.nl

pcmweb.nl 2011-01-12

"We zijn erg te spreken over deze behuizing. Allereerst oogt hij strak, degelijk en chique. Ten tweede is het een genot om mee te werken. Binnen een paar uur is een uiterst schoon, stil en goed ventilerend systeem te bouwen. Dit is vooral te danken aan het uitstekende kabelmanagement."

Read full review at pcmweb.nl


Hardwareluxx.de 2011-01-04

"Das Gehäuse überzeugt zunächst durch die solide Verarbeitung und edle Optik. Zudem kommt die gute Funktionalität. Besonders ist diese den gummierten Kabeldurchführungen, den Staubschutzfiltern, den ruhigen Lüftern, den Rändelschrauben und natürlich der großen Menge an Platz geschuldet. Da das Case auch noch zu einem sehr guten Preis über die Ladentische gehen soll möchte ich hiermit den FTS Gold Award vergeben."

Read full review at Hardwareluxx.de


PC4free.tk 2010-12-25

"Overall, this is a fantastic case which I am going to give my Silver Award."

Read full review at PC4free.tk

Award from Sweclockers.se

Sweclockers.se 2010-11-24

"YouTube video review, please see link"

Read full review at Sweclockers.se


www.cowcotland.com 2010-11-18

"YouTube video review, please see link"

Read full review at www.cowcotland.com


NCIX.com 2010-10-27

"YouTube video review, please see link."

Read full review at NCIX.com

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