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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 | Inverted and Horizontal Layout | E-ATX Motherboard Compatible | BGW71
be quiet!

be quiet! Light Base 900 FX Black PC case | Fully Windowed Front and Side | Dual Chamber | ARGB | 4 Light Wings 140mm PWM Fans | Inverted and Horizontal Layout | E-ATX Motherboard Compatible | BGW71

4.6(714 reviews, all variants)
Amazon's Choicemid range$150-$299
#73 in Computer Cases
fan size
140mm
material
Alloy Steel
compatible
Extended ATX
cooling method
Air

Want the best price and purchase timing?

Our AI advisor analyzes real-time pricing across all channels to find you the best deal.

AI Verdict

This 16.8 kg steel and tempered glass E-ATX case features dual 420mm radiator support and 4 pre-installed 140mm ARGB fans for high-end show builds.

Strong Fit

This case is a strong fit for high-end, show-off builds with its fully windowed front and side panels, massive ARGB lighting, and extensive cooling support for up to two 420mm radiators. Its E-ATX compatibility and large component clearances ensure it can house powerful hardware.

If this case is too large or expensive, look for a smaller, non-FX model like the Light Base 900 DX for a similar aesthetic without pre-installed fans or as much ARGB.

Regret Score™

Low Risk

Lower is better — measures purchase-regret risk from real buyer complaints, review credibility, and product maturity

20/100
vs. 1,285 Power & Cooling we've analyzedSafer than 72%
Hidden Defects
12/35

Issues discovered after purchase

Achilles' Heel
0/25

Critically weak dimension

Expectation Gap
4/20

Amazon rating vs actual quality

Fit Risk
4/20

Chance this product isn't for you

BuyChoice Score
4.2

Pros

  • Supports up to two 420mm radiators simultaneously, plus an additional 360mm radiator on the side, for extensive liquid cooling setups.
  • Includes 4 pre-installed Light Wings 140mm PWM fans, with 3 inverted blades for side intake, ensuring high airflow and quiet operation.
  • Features a massive 3-meter ARGB LED strip with 172 LEDs and two ARGB/PWM hubs for extensive lighting customization and synchronization.
  • Offers tool-less inversion and horizontal layout options by relocating feet, adapting to various desk setups in seconds.
  • Accommodates E-ATX motherboards, GPUs up to 495mm long, and CPU coolers up to 190mm tall, fitting most high-end components.
  • Includes a flexible VGA holder to prevent graphics card sag, working with both horizontal and vertical GPU orientations.

Cons

  • The case is heavy at 16.8 kg, making it less portable for frequent relocation.
  • Some users report dust accumulation issues due to potential panel gaps, requiring more frequent cleaning.
  • The vertical PSU location in the dual-chamber design can make cable management and PSU installation challenging for some users.
  • The lack of support in the glass corner may reduce structural integrity when moving the case.
  • While supporting 225mm PSUs, some users recommend shorter PSUs (under 190mm) to avoid tight cable routing.

Dimension Scores

Efficiency & Output9/10

The case supports up to two 420mm radiators and an E-ATX motherboard, allowing for extremely powerful and cool systems.

Noise Level8/10

The 4 pre-installed Light Wings 140mm PWM fans are reported to be very quiet at 50% speed and still quiet at 100% for max settings.

Build Quality7/10

Constructed from alloy steel and tempered glass, the case weighs 16.8 kg, indicating a substantial and premium feel, though some users noted a lack of glass corner support.

Cable Management7/10

The dual-chamber design and two ARGB/PWM hubs with 12 ports provide ample space and connectivity for organized cable routing, despite some challenges with PSU placement.

Best For

  • Enthusiasts building high-performance systems with extensive liquid cooling loops.
  • Users prioritizing aesthetic display of internal components with panoramic glass and ARGB lighting.
  • Builders needing flexible case orientation (inverted or horizontal) for specific desk or room layouts.
  • Systems utilizing E-ATX motherboards and large, powerful graphics cards.

Not Recommended For

  • Beginner PC builders due to reported complexities with PSU placement and potential dust issues.
  • Users who frequently move their PC, given its 16.8 kg weight and potential glass corner fragility.
  • Budget-conscious builders, as its mid-range price point and feature set cater to premium builds.

Watch Out For

  • Dust accumulation can be an issue due to an opening between panels, leading to unfiltered dust entry.
  • PSU installation can be tricky; one user noted it was 'one of the harder cases to work on' due to unorthodox PSU location.
  • The 2.5" drive cages, while removable, might require significant cable tidying if used, or can be removed for more space.
  • Moving the 16.8 kg case requires caution due to a reported lack of support in the glass corner, potentially compromising structural integrity.

Full Specifications

ASINB0DGSS57DM
Brandbe quiet!
ColorBlack
Seriesbe quiet! LIGHT BASE 900 FX Black
Fan Size140 Millimeters
MaterialAlloy Steel
Case TypeTower
Model Namebe quiet! LIGHT BASE 900 FX Black
Item Weight13.2 pounds
Manufacturerbe quiet!
Cooling MethodAir
Item model numberBGW71
Product Dimensions25.2 x 22.44 x 16.93 inches
Computer Memory TypeDIMM
Item Dimensions LxWxH25.2 x 22.44 x 16.93 inches
Number of USB 3.0 Ports1
Motherboard CompatabilityExtended ATX
Power Supply Mounting Type{'option 1': 'Bottom Fixing'}
Recommended Uses For ProductGaming

What Buyers Say

The be quiet! Light Base 900 FX Black is a visually striking case, often praised for its panoramic glass and extensive ARGB lighting. Builders appreciate the included fans and RGB hubs, simplifying complex setups. However, some users found the PSU location challenging for cable management, and there are concerns about dust accumulation and the structural integrity of the glass corner when moving the heavy 16.8 kg case.

“Man, this case looks sick with all the RGB and glass, but seriously, my PSU was a pain to get in there and I'm already seeing dust after a month, what gives?!”

Common Praise

  • The case is absolutely gorgeous with its panoramic glass and ARGB lighting.
  • Super spacious interior makes it easy to build in, even with large components.
  • Included Light Wings fans and ARGB/PWM hubs simplify fan and lighting control.
  • The ability to quickly switch between standard, inverted, and horizontal layouts is a unique and appreciated feature.
  • Excellent support for multiple large radiators, up to two 420mm, for advanced liquid cooling.

Common Complaints

  • Dust accumulation is a problem due to an opening between panels that lets in unfiltered dust.
  • The PSU location is unorthodox and can make installation and cable routing difficult, especially for longer PSUs.
  • The glass corner lacks support, making the 16.8 kg case feel less structurally sound when moved.
  • Some users expected better quality control for the price, despite the overall premium feel.
  • Fitting the motherboard backplate requires careful planning, sometimes necessitating PSU removal if not done first.

Ownership Tips

  • The case is heavier than expected at 16.8 kg, making it a two-person job to move safely.
  • The included 140mm Light Wings fans are genuinely quiet at lower RPMs, but become noticeable at 100%.
  • The removable top panel, while heavy, is convenient for radiator installation and cleaning the dust filter.
  • The flexible VGA holder is effective at preventing GPU sag, even with massive cards.
  • The dual-chamber design effectively hides cables, but the PSU area can still feel cramped if you have a long power supply.

Frequently Asked Questions

Can this case accommodate large graphics cards?

Yes, the Light Base 900 FX Black supports graphics cards up to 495mm in length, fitting even the strongest GPUs. It also includes a flexible VGA holder to prevent sag.

How many fans come pre-installed and what size are they?

It comes with 4 pre-installed Light Wings 140mm PWM fans. Three are inverted-blade fans for side intake, and one is a standard fan for rear exhaust.

Is it easy to change the case orientation?

Yes, you can switch between standard, inverted, and horizontal layouts in seconds by simply relocating the case feet.

What kind of radiator support does this case offer?

The case can hold up to two 420mm radiators simultaneously in the top and bottom, and an additional 360mm radiator on the side, for a total of three radiators.

Does this case have good cable management options?

It features a 2-chamber design that tucks drives and cables behind the motherboard tray for cleaner routing and improved airflow. It also includes two ARGB and PWM hubs with 12 ports.

Buying Guide

When picking a PC case, you're not just getting a box for your parts; you're choosing how your build looks and how well it cools. For a case like this, with its panoramic glass, you're really buying into the 'showcase' aspect. Think about where it'll sit and if you want to see all your components. Also, consider the cooling capacity – if you're going for high-end parts, you need a case that can handle the heat. This one is built for serious cooling.

Dual Chamber Design

This separates the main components (motherboard, GPU) from the power supply and drives. It's like having a dedicated 'back room' for all the messy bits, which helps with airflow to your hot components and makes cable management much cleaner.

Radiator Support (e.g., two 420mm)

This tells you how much liquid cooling you can cram in. A 420mm radiator is huge, meaning it can dissipate a lot of heat. If you're running a high-end CPU and GPU, being able to fit multiple large radiators means your system will stay much cooler, even under heavy load.

E-ATX Motherboard Compatible

E-ATX motherboards are larger than standard ATX boards, often found in enthusiast or workstation builds with more features, RAM slots, or PCIe lanes. This compatibility ensures your case won't be the limiting factor for a high-end motherboard choice.

Inverted and Horizontal Layout

This is about flexibility for your setup. An inverted layout flips your motherboard, which can change how you view your components or how air flows. A horizontal layout lets you lay the case flat, which is great for unique desk setups or if you want to use it like a coffee table PC.

Alternatives

If you need a more compact case, look for models supporting only ATX motherboards and single 360mm radiator support. For a less 'showy' build, consider cases with solid side panels and fewer integrated ARGB features.

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