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Black steel ATX mid-tower case, solid side panel, front door closed, two 5.25-inch bays visible

Fractal Design

Fractal Design FD-CA-DEF-R5-BK Define R5 ATX Mid Tower PC Case

SKU CH-HTVX-MA7D9 MPN FD-CA-DEF-R5-BK

A steel ATX mid-tower case with dense sound-absorbing material, ModuVent covers, two pre-installed 140 mm fans, support for eight 3.5″ drives and radiators up to 420 mm

  • Max graphics card length440 mm
  • Power supplyATX
  • Supported motherboard sizesATX / Micro ATX / Mini ITX
  • Side panel typeWithout Side Window
  • 5.25-inch external bays2
  • 3.5-inch internal bays8 × 3.5 in HDD positions (can also accommodate 2.5 in units)
  • Dense sound-absorbing material throughout the chassis minimises system noise
  • ModuVent covers let you switch between silent and high-airflow configurations
  • Eight 3.5″ drive positions plus two dedicated 2.5″ slots provide extensive storage capacity
  • Front and top radiator support up to 420 mm for custom liquid-cooling builds
  • Two pre-installed 140 mm fans at 1000 RPM deliver balanced cooling out of the box

Define R5 silent mid tower

The Fractal Design Define R5 is a black steel ATX mid tower built for quiet operation. Dense sound-absorbing material lines the interior, and the ModuVent top covers let you choose between maximum silence or increased airflow. Two Dynamic GP14 140 mm fans are pre-installed at front and rear, running at 1000 RPM. The case supports ATX, Micro ATX and Mini ITX motherboards.

Upgrades from open or windowed cases

Builders moving from chassis with mesh panels or acrylic windows gain a solid side panel and a fully removable 5.25 inch drive cage that frees space for radiators or extra drives. The integrated three-speed fan controller handles PWM and voltage fans without software. Removable dust filters on front, top and bottom simplify maintenance when swapping to liquid cooling or adding more intake fans.

Eight 3.5 inch bays and long GPU clearance

Eight 3.5 inch positions accept both hard drives and 2.5 inch units, while two dedicated 2.5 inch mounts handle SSDs. The front accommodates radiators up to 360 mm once the drive cage is removed, and the top fits up to 420 mm with a 55 mm thickness limit for radiator plus fan. Maximum graphics card length is 440 mm, CPU cooler height 180 mm, and power supply length 300 mm without a bottom fan or 190 mm with a 120 mm bottom fan.

How it compares

Measured against everything we stock in Tower & Desktop PC Cases, at today’s prices. Recalculated every night.

Price $96.99
Typical for this category: the median of 1,468 items is $100.99.
Max graphics card length 440 mm
Higher than about 88% of the 894 comparable items (median 400 mm).

New to this? Buying PC parts with Monero — what to check, what it costs to pay, and what is never asked for.

Specifications

Product
Brand nameFractal Design
Product lineDefine R5
Model nameFD-CA-DEF-R5-BK
Product typeATX Mid Tower
Product colorBlack
Storage
5.25-inch external bays2
3.5-inch internal bays8 × 3.5 in HDD positions (can also accommodate 2.5 in units)
2.5-inch internal bays2 × 2.5 in dedicated SSD unit positions
Ports & slots
Expansion card slots7
Front panel ports2 x USB 3.0, 2 x USB 2.0, 2 x Audio
Power
Power supply includedNo
Power supplyATX
Size & build
Max graphics card length440 mm
Side panel typeWithout Side Window
Fan mounting optionsFront: 2 × 120 mm / 2 × 140 mm fan (1 x Fractal Design Dynamic GP14 fan, 1,000 RPM speed included)
Top: 3 × 120 mm / 3 × 140 mm fan
Rear: 1 × 120 mm / 1 × 140 mm fan (1 x Fractal Design Dynamic GP14 fan, 1,000 RPM speed included)
Bottom: 2 × 120 mm / 2 × 140 mm fan
Side: 1 × 120 mm / 1 × 140 mm fan
Product dimensions20.91 in × 9.13 in × 18.19 in
Product weight22.69 lb (10.3 kg)
Shipping weight12.34 kg
Package size615 × 538 × 338 mm
Compatibility
Supported motherboard sizesATX / Micro ATX / Mini ITX
Radiator supportFront 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 140 mm
Bottom radiator
120 or 240 mm (Use of radiators in the bottom position limits the PSU length to 165 mm)
CPU cooler height limit180 mm
PSU length limit190/170 mm with a bottom 120/140 mm fan installed
300 mm when not using any bottom fan location
More details
Included fansFront - 1 × 140 mm / Rear - 1 × 140 mm

Questions about this item

Will the Define R5 fit my full-size graphics card?

The case accepts graphics cards up to 440 mm long, which covers almost every current full-size model.

What power-supply length can I use if I keep the bottom fan installed?

With a 120 mm bottom fan the PSU can be 190 mm long; with a 140 mm fan the limit is 170 mm.

Can I mount a 360 mm radiator in the front without removing the drive cage?

A front 360 mm radiator requires the drive cage to be removed; the cage is fully removable to make room.

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