Define R5

The R5 is packed with intelligently designed enthusiast-oriented features delivering a silent case with powerful and expansive air and liquid cooling support

  • Optimally designed for silent computing with high density sound-dampening material
  • Extensive water cooling support for a case of this size
  • Equipped with tool-less ModuVent™ fan slot covers



View specifications

The Fractal Design Define R5

The Define R5 case reaches the highest level of silent computing through strategically placed dense sound-dampening material, ModuVent™ fan vent covers and finely tuned Dynamic Series fans. Packed with intelligently designed enthusiast-oriented features delivering a silent case with powerful and expansive air and liquid cooling support.

The Define R5 was designed with configurability in mind, accommodating up to 8 hard drives and all modern graphics cards. Should you wish to expand your system with water cooling components or more fans, the layout can easily be configured to meet your demand.

Key features

  • Optimally designed for silent computing with high density sound-dampening material throughout the case, while not compromising on airflow and cooling capabilities

  • Extensive water cooling support for its size; housing radiators up to 420 mm in the top and 360 mm in the front

  • Equipped with new tool-less ModuVent™ fan slot covers allowing the user to install more fans if desired or keep fan slots covered to maximize sound absorption

  • Including two Fractal Design Dynamic GP-14 140 mm fans developed for superlative airflow while still maintaining low noise levels

  • Three-speed fan controller is strategically integrated in the front panel and supports up to three fans

Smart filters

Maintaining a dust-free interior with the help of dust filters that cover front and bottom air intakes that are easy to access from the front on the case

Quick release system

The innovative Quick release system on the left side of the case provides secure mounting of the left side panel, while allowing quick and easy access to the system

Dual side door

The front door has dual side mounting to better fit your work space

Storage features

  • Two dedicated SSD mounts cleanly placed behind the motherboard tray, featuring innovative new brackets for tool-free installation and removal

  • The HDD cage system holds up to eight 3.5” or 2.5” drives and is more adaptable than ever, allowing the user to modify the case layout according to personal preference with more places to relocate the cages

  • The ODD cage can easily be removed to gain additional interior space; the area can be freed up to allow for increased airflow, to provide a new place for HDD cage mounting or to make more room for water cooling components.

  • Sturdy metal HDD trays provide excellent dampening features for the hard drives while providing better airflow through the cage with an updated, more open design


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"The Fractal Design Define R5 is easily one of the best chassis’ on the market. It’s packed full of features that make it ideal for an ultra-high end, ultra-quiet build. If you need no compromise on features and performance, combined with sleek and professional looking aesthetics – look no further than the Define R5."
"How do you build on the solid foundations of the Define R4? That's the question that Fractal was faced with, and we're pleased to see that the company has taken the logical step: rather than attempting to build a revolutionary successor from the ground-up, it has taken a tried-and-trusted solution and improved it in numerous meaningful ways. A good number of upgrades are small and seemingly trivial, but put them together and you have an overall package that's a noticeable step-up from the 2012 model"
"Fractal have really hit the ball out of the pack with the R5 although in all honesty we personally think this is what the R4 should have been [...] Mix in all of the watercooling options, HDD, fan covers and all of the options the case delivers we feel it thoroughly deserves the OC3D Gold award. In addition to this as a very rare bonus I (TTL) have also decided to bestow the Fractal R5 Window version with my own TTL white gold award, the main reason for this is this is a case I would happily pay the £89.99 for with my own money. "


  • 3.5" HDD/2.5" SSD positions
  • 2.5" dedicated SSD unit positions
    2 (fits SSDs up to 12 mm thick)
  • 5.25" bays
    2 (removable)
  • Expansion slots
  • Front ports
    2x USB 3.0, 2x USB 2.0, Audio in/out, Power button with LED (blue), HDD activity LED (blue), Reset button
  • Total fan mounts
  • Front fan
    2x 120/140 mm (included 1x Fractal Design Dynamic GP-14 fan @ 1000 RPM)
  • Top fan
    3x 120/140 mm
  • Rear fan
    1x 120/140 mm (included 1x Fractal Design Dynamic GP-14 fan @ 1000 RPM)
  • Bottom fan
    2x 120/140 mm
  • Side fan
    1x 120/140 mm
  • Dust filters
    Front fans, Bottom fans (ejects from the front of the case)
  • Cable routing grommets
  • Fixed velcro straps
  • Captive thumbscrews
    Right side panel
  • Left side panel
    Industrial sound-dampened steel
  • Right side panel
    Industrial sound-dampened steel


  • Power supply type
  • Motherboard compatibility
    ATX, Micro ATX, Mini ITX
  • Front radiator
    360, 280, 240, 140 or 120 mm (without drive bays)
  • Top radiator
    420, 360, 280, 240, 140 or 120 mm (a thickness limitation of 55 mm for both radiator + fan applies on 420, 280 and 140 mm radiators; 420 and 360 mm radiators require removal of the ODD bay)
  • Rear radiator
    120 or 140mm
  • Bottom radiator
    120 or 240 mm (Use of radiators in the bottom position limits the PSU length to 165 mm)
  • PSU max length
    190/170 mm with a bottom 120/140 mm fan installed or 300 mm when not using any bottom fan location
  • GPU max length
    310 mm with the top HDD cage installed or 440 mm with the top cage removed
  • CPU cooler max height
    180 mm
  • Cable routing space
    20-35 mm


  • Case dimensions (WxHxD)
    232 x 451 x 521 mm
  • Case dimensions - with feet/screws/protrusions
    232 x 462 x 531 mm
  • Net weight
    10.7 kg
  • Package dimensions (WxHxD)
    327 x 615 x 540 mm
  • Package weight
    12.5 kg
  • Volume
    54.5 liters


  • Warranty
    2 Years
  • Package contents
    Define R5 computer case, User manual, Accessory box
  • EAN
  • UPC
  • Additional information
    Available for System Integrators
  • Product code (Black)
  • Product code (Blackout)
  • Product code (Titanium)
  • Product code (White)