Fractal Design Define R5 - Mid Tower Computer Case - ATX - Optimized for High Airflow and Silent - 2X Fractal Design Dynamic GP-14 140mm Silent Fans Included - Water-Cooling Ready - Black

Name: Fractal Design Define R5 - Mid Tower Computer Case - ATX - Optimized for High Airflow and Silent - 2X Fractal Design Dynamic GP-14 140mm Silent Fans
Brand: Unbranded
SKU: B00Q2Z11QE
Price: 119.99 USD
Availability: InStock

By Mike Perry, Hardware Editor · Verified 2026-09-15

Mike Perry has researched PC hardware since 2014, tracking 80+ GPU generations, 50+ retro handheld platforms, and 30+ vintage PC configurations. He synthesises community benchmarks, manufacturer specs, and public forum data into actionable buying guides. View full credentials →

$119.99

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*Price sourced from Amazon.com. Last updated 2026-04-20. Price and availability subject to change.

Bottom line: The Fractal Design Define R5 - Mid Tower Computer Case - ATX - Optimized for High Airflow and Silent - 2X Fractal Design Dynamic GP-14 140mm Silent Fans Included - Water-Cooling Ready - Black is a specs-and-price decision rather than a crowd-consensus one in the pc cases category, priced around $119.99. Check the specification table above against one or two close alternatives — on price and spec fit, not on star ratings.

The Fractal Design Define R5 is the mid-tower ATX case that made silent computing mainstream, and at $119.99 with a 4.7/5 rating from 1,969 reviewers it remains a reference build platform. Dense noise-reducing material lines the panels throughout, while tool-less ModuVent fan slot covers let you choose your tradeoff: leave them sealed for maximum sound absorption, or pop them out and add fans when your GPU and CPU need more air. Two Fractal Design Dynamic GP-14 140mm fans ship in the box, tuned for high airflow at low noise rather than raw static pressure. Water-cooling support is unusually…

SpecPicks Verdict

SpecPicks scored Fractal Design Define R5 - Mid Tower Computer Case - ATX - Optimized… using a rating × review-volume × price-fit model applied to our editorial and benchmark analysis across the pc cases category. Compare with similarly-priced alternatives in the pc cases category before committing. Judge it on the specification table and the price rather than on sentiment: check the figures that decide your use case, then put it side-by-side with two or three close alternatives in the Compare tool before clicking through.

Common buyer scenarios for pc cases of this kind: matching it to an existing build, replacing a failing part, or upgrading from a previous-generation equivalent. Check the spec table below against your current setup — particularly socket / form-factor / power-rating fields — and confirm compatibility on the Amazon listing before purchase. Prices, stock, and Prime eligibility update directly from Amazon's catalog and may have moved since this page was last verified.

Frequently Asked Questions

Will a 360mm AIO radiator fit in the Define R5?

Yes. Fractal Design rates the Define R5 for radiators up to 420mm in the top position and up to 360mm in the front, so a 360mm AIO fits in either location. Confirm your specific radiator's thickness and fan stack against the case listing before ordering.

How many fans come with the Define R5?

Two Fractal Design Dynamic GP-14 140mm fans are included. They're tuned for high airflow at low noise. Additional fan slots sit behind tool-less ModuVent covers, so you can add fans later without removing anything but the cover.

Is the Define R5 actually quiet?

Silence is its design goal: high-density noise-reducing material runs throughout the chassis, ModuVent covers seal unused fan vents, and the bundled Dynamic Series fans are tuned for low noise. Reviewers rate it 4.7/5 across 1,969 ratings.

How many hard drives can the Define R5 hold?

Up to 8 hard drives, per Fractal Design, which is why the R5 stayed popular with NAS and home-server builders. The layout does this while still clearing modern full-length graphics cards.

Is the Define R5 worth it at this price?

At roughly $119.99 you get sound damping, 420mm/360mm radiator support, and two 140mm fans included, which offsets a separate fan purchase. Check the listing for current price and availability, since both change frequently.

Pros & Cons

Pros

✓ Ships via Amazon with Prime eligibility and the standard returns policy

Cons

✗ Confirm socket / form-factor / power-rating compatibility against your build before ordering
✗ Price, stock, and Prime eligibility update from Amazon and may have changed since this page was last verified

Key Features

Optimally Designed For Silent Computing With High Density Noise-Reducing Material Throughout The Case For Maximum Sound Absorption, While Not Compromising On Airflow And Cooling Capabilities.
Extensive Water Cooling Support For A Case Of This Size; Housing Radiators Up To 420Mm In The Top And 360Mm 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 Gp14 140Mm Fans Developed For Superlative Airflow While Still Maintaining Low Noise Levels.

Full Specifications

Brand	Fractal Design
Color	Black
Fan Size	140 Millimeters
Material	Aluminum
Case Type	Mid Tower
Model Name	Fractal Design Define R5 Black
Light Color	Blue
Model Number	FDCADEFR5BK
Cooling Method	Air
Item Type Name	ATX Mid Tower
Number of Fans	2
Mfr Part Number	FDCADEFR5BK
Total Usb Ports	4
Antenna Location	Gaming
Compatible Devices	CPU
Enclosure Material	Aluminum
Total USB 2.0 Ports	2
Total USB 3.0 Ports	2
Warranty Description	2 year
Hard Disk Form Factor	3.5 Inches

Ready to buy?

Fractal Design Define R5 - Mid Tower Computer Case - ATX - Optimized for High Airflow and Silent - 2X Fractal Design Dynamic GP-14 140mm Silent Fans Included - Water-Cooling Ready - Black is available on Amazon with Prime shipping and the full Amazon returns policy. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.

View Current Price on Amazon →

*Price sourced from Amazon.com. Last updated 2026-04-20. Price and availability subject to change.