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be quiet! Light Base 900 FX Black PC Case, Fully Windowed Front and Side | Dual Chamber, ARGB, 4 Light Wings 140mm PWM Fans, Mid Tower, Inverted and Horizontal Layout, E-ATX Motherboard Compatible
be quiet!

be quiet! Light Base 900 FX Black PC Case

Bottom line: The be quiet! Light Base 900 FX Black PC Case ($249.90 on Amazon as of 2026-10-06): Dual-chamber E-ATX layout fits top GPUs plus two 420mm radiators; main trade-off: large dual-chamber footprint demands real desk or floor space.

$249.90

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Mike Perry — Hardware researcher since 2014, focused on GPU performance across gaming, rendering, and local-LLM inference. Synthesises community benchmarks, manufacturer specs, and public forum data into actionable buying guides.

*Price sourced from Amazon.com. Last updated 2026-10-06. Price and availability subject to change.

Pros & Cons

Pros

  • ✓ Dual-chamber E-ATX layout fits top GPUs plus two 420mm radiators
  • ✓ 4 pre-installed Light Wings 140mm PWM fans, expandable to 10 total
  • ✓ Front and side windows with wraparound ARGB visible from every angle
  • ✓ Removable feet invert or lay the case horizontal in seconds

Cons

  • ✗ Large dual-chamber footprint demands real desk or floor space
  • ✗ Fully windowed panels expose every cable and dust speck
  • ✗ Triple-radiator, E-ATX focus is overkill for modest single-GPU builds
  • ✗ Wire-free look needs a BTF/Project Zero/Stealth back-connector board

SpecPicks Verdict

SpecPicks scored be quiet! Light Base 900 FX Black PC Case using a rating × review-volume × price-fit model applied to published specs and reviews across the pc cases category. be quiet!'s pc cases lineup sits within the broader category mid-tier; price and specs are the deciding factors over brand loyalty here. 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 retailer's listing before purchase. Prices and stock are set by the retailer and may have moved since this page was last updated.

Key Features

  • You deserve to show what you have. Large window panels on the front and side give you a look at your PC components at all times. This makes Light Base 900 FX Black the perfect choice as a show case.
  • Light Base 900 FX Black is created for the big appearance. Nothing proves that more than the massive ARGB LED strip that is visible from every angle. With ARGB control and the ability to synchronize the lighting with the motherboard, you can make Light Base 900 FX Black your very own case. Show who you are!
  • Light Base 900 FX Black has 4 pre-installed Light Wings fans. The fan on the back works as an air outlet, 3 Light Wings 140 mm PWM with inverted fan blades are pre-assembled on the side. These fans ensure that your system remains a real eye-catcher. The 7 airflow-optimised fan blades not only reduce noise-causing air turbulence. They also ensure that the fans deliver the required performance even under demanding conditions.
  • It takes longer to read this text than to invert Light Base 900 FX Black. With its removable feet, you can literally invert this case in seconds. You can also position it horizontally, which is just as fast. No matter what layout your gaming room requires: Light Base 900 FX Black delivers.
  • You can add up to 6 additional fans to the 4 pre-installed fans and thus install up to 10 fans. This makes Light Base 900 FX Black extremely flexible. Thanks to its extra spacious design, the case can also hold up to two 420mm radiators, an E-ATX motherboard and even the strongest graphics cards at the same time. Thanks to its 2-chamber design, drives and cables are cleverly mounted at the rear for strong airflow.
  • The removable radiator and fan holder in the lid and base make installation of your setup extremely easy. Each bracket can hold a radiator up to 420 mm. You can also install another 360 mm radiator on the side and thus an incredible 3 radiators at the same time. Light Base 900 FX Black has 2 ARGB and PWM hubs with a total of 12 ports. Its positions at the top and bottom of the case allow you to easily connect your hardware.

Full Specifications

Brandbe quiet!
ColorBlack
Fan Size14 centimeters
MaterialAlloy Steel
Case TypeTower
Model Namebe quiet! LIGHT BASE 900 FX Black
Light ColorCustomizable
Model NumberBGW71
CompatibilityPC
Cooling MethodAir
Number of Fans8
Mfr Part NumberBGW71
Antenna LocationGaming
Compatible Devices[PARTIAL]
Enclosure MaterialAlloy Steel
Total USB 3.0 Ports1
Warranty Description3 Year Manufacturer Guarantee
Supported MotherboardExtended ATX
Internal Bays Quantity4
Item Dimensions D x W x H25.2"D x 22.44"W x 16.93"H
Full listing titlebe quiet! Light Base 900 FX Black PC Case, Fully Windowed Front and Side | Dual Chamber, ARGB, 4 Light Wings 140mm PWM Fans, Mid Tower, Inverted and Horizontal Layout, E-ATX Motherboard Compatible

Ready to buy?

be quiet! Light Base 900 FX Black PC Case, Fully Windowed Front and Side | Dual Chamber, ARGB, 4 Light Wings 140mm PWM Fans, Mid Tower, Inverted and Horizontal Layout, E-ATX Motherboard Compatible is listed on Amazon. Price, availability, shipping and returns are set by Amazon and its sellers — check the listing for current terms. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.

Buy on Amazon — $249.90

*Price sourced from Amazon.com. Last updated 2026-10-06. Price and availability subject to change.

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