be quiet! LIGHT BASE 900 FX Black Tower
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About This Item
- Full tower ATX/EATX case with panoramic tempered glass panels
- Supports up to 3x 140mm side fans and 1x 140mm rear exhaust
- 3-meter ARGB LED strip with 172 LEDs and motherboard sync
- Accommodates 49.5cm graphics cards and 19cm CPU coolers
- Front I/O: 2x USB 3.2 Gen 2 Type-A, 1x USB 3.2 Gen 2 Type-C, audio
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be quiet! LIGHT BASE 900 FX Black | Full Tower Gaming Case with ARGB Lighting
The be quiet! LIGHT BASE 900 FX Black Full Tower delivers exceptional build quality and versatile cooling options for serious gaming and creative setups. With its panoramic tempered glass panels, multi-zone ARGB lighting, and support for up to three 420mm radiators, this case transforms your PC into a striking centerpiece while maintaining optimal airflow.
Key Specifications
| Metric | Spec |
|---|---|
| Form Factor | Full Tower |
| Motherboard Support | ATX, EATX, micro ATX, Mini-ITX, XL-ATX |
| Maximum GPU Length | 49.5 cm |
| Maximum CPU Cooler Height | 19 cm |
| Radiator Support | Up to three 420mm radiators |
| Fans Included | 4x 140mm ARGB PWM (3x side, 1x rear) |
| USB Ports | 2x USB 3.2 Gen 2 Type-A, 1x Type-C |
Panorama Design for Perfect Visibility
The LIGHT BASE 900 FX Black features large tempered glass panels on both the front and side, creating an unobstructed view of your components. This panoramic design makes it ideal for showcasing custom builds, RGB lighting setups, and premium hardware. The black finish and clean lines ensure your components remain the focal point.
3 Meters of ARGB LEDs
With 172 individually addressable LEDs spread across a 3-meter strip, this case delivers vibrant, customizable lighting from every angle. The included ARGB controller button provides instant access to multiple lighting modes, while motherboard synchronization via ASUS Aura Sync, MSI Mystic Light, and other platforms offers expanded control options. The illumination spans the front panel and case fans for cohesive, eye-catching effects.
Optimized Cooling Performance
Four pre-installed Light Wings 140mm PWM fans deliver exceptional airflow with their reverse-blade design. Three fans mount on the side as intakes, while one serves as rear exhaust. The 7-blade design minimizes turbulence and noise while maintaining high static pressure. Support for up to 10 fans total and three 420mm radiators ensures your system stays cool under heavy loads.
Instant Layout Flexibility
The relocatable feet allow you to invert the case in seconds, adapting to your workspace orientation. You can also position it horizontally for HTPC setups or unique display configurations. This flexibility makes the LIGHT BASE 900 FX Black suitable for various room layouts and usage scenarios.
Maximum Hardware Compatibility
The spacious interior accommodates E-ATX motherboards, graphics cards up to 49.5cm long, and CPU coolers up to 19cm tall. The two-chamber design separates drives and cables from the main airflow path, maintaining clean aesthetics and optimal cooling. Support for up to two 420mm radiators simultaneously provides extensive liquid cooling options.
Enhanced Usability Features
Detachable radiator and fan brackets in the top and bottom positions simplify installation of your cooling setup. The case includes two ARGB and PWM hubs with 12 connectors total, positioned for convenient access. A flexible VGA holder prevents GPU sag regardless of orientation, while the motherboard tray supports backside connector designs like ASUS BTF and MSI Project Zero for clean cable management.
Box Contents
- be quiet! LIGHT BASE 900 FX Black Full Tower case
- 4x Light Wings 140mm ARGB PWM fans (3x side, 1x rear)
- ARGB controller button
- Radiator and fan mounting brackets
- VGA holder
- Screws and mounting hardware
- User manual
Check before you buy
- Confirm your graphics card length does not exceed 49.5 cm
- Verify your CPU cooler height is under 19 cm
- Check that your power supply fits within 22.5 cm length
- Ensure your chosen radiators match the supported sizes (120-420mm)
Frequently Asked Questions
Q: How many fans can I install in total?
A: The case supports up to 10 fans across multiple mounting positions.
Q: Does it support liquid cooling?
A: Yes, it supports radiators up to 420mm in multiple positions including bottom, side, and top.
Q: Are the fans PWM controlled?
A: Yes, the included Light Wings fans feature PWM control for automatic speed adjustment.
Q: Can I mount the case horizontally?
A: Yes, the relocatable feet allow both vertical and horizontal orientations.
Q: Does it support BTF motherboards?
A: Yes, the motherboard tray fully supports backside connector designs like ASUS BTF and MSI Project Zero.
The Consultant’s Verdict & Warranty
The be quiet! LIGHT BASE 900 FX Black Full Tower stands out for builders who want maximum hardware compatibility, extensive cooling options, and stunning visual presentation. Its panoramic glass design, comprehensive ARGB lighting, and support for multiple large radiators make it perfect for high-performance gaming rigs and creative workstations. Covered by the standard Manufacturer Warranty.
| Technical details | |
|---|---|
| Number of 3.5" bays | 1 |
| Number of 2.5" bays | 4 |
| Supported motherboard form factors | ATX, EATX, micro ATX, Mini-ITX, XL-ATX |
| Supported HDD sizes | 2.5,3.5" |
| Suitable for | Gaming |
| Side window | Yes |
| Reset button | Yes |
| Product colour | Black |
| Number of expansion slots | 8 |
| Maximum CPU cooler height | 19 cm |
| Maximum graphics card length | 49.5 cm |
| Maximum PSU length | 22.5 cm |
| Type | PC |
| Form factor | Full Tower |
| Compliance certificates | CE, RoHS, UKCA, WEEE |
| Material | |
| Material | Acrylonitrile butadiene styrene (ABS), Glass, SGCC |
| Indication | |
| Illumination location | Case fans, Front |
| Illumination colour | Multi |
| Illumination | Yes |
| Ergonomics | |
| Reset button | Yes |
| On/off button | Yes |
| Design | |
| Anti-dust filter | Yes |
| Material | Acrylonitrile butadiene styrene (ABS), Glass, SGCC |
| Number of 3.5" bays | 1 |
| Number of 2.5" bays | 4 |
| Supported motherboard form factors | ATX, EATX, micro ATX, Mini-ITX, XL-ATX |
| Suitable for | Gaming |
| Side window | Yes |
| Reset button | Yes |
| Illumination location | Case fans, Front |
| Illumination colour | Multi |
| Illumination | Yes |
| Product colour | Black |
| Number of expansion slots | 8 |
| Maximum CPU cooler height | 19 cm |
| Maximum graphics card length | 49.5 cm |
| Maximum PSU length | 22.5 cm |
| Type | PC |
| Form factor | Full Tower |
| On/off button | Yes |
| RGB control button | Yes |
| Power supply | |
| Supported power supply form factors | ATX, PS2 |
| Power supply included | No |
| Ports & interfaces | |
| USB 3.2 Gen 2 (3.1 Gen 2) Type-A ports quantity | 2 |
| USB 3.2 Gen 2 (3.1 Gen 2) Type-C ports quantity | 1 |
| Audio input | Yes |
| Audio output | Yes |
| Cooling | |
| Rear radiator sizes supported | 120,140 mm |
| Maximum airflow | 56 cfm |
| Side fans installed | 3x 140 mm |
| Number of side fans supported (max) | 3 |
| Side fans diameters supported | 120,140 mm |
| Rear fans installed | 1x 140 mm |
| Number of rear fans supported (max) | 1 |
| Rear fans diameters supported | 120,140 mm |
| Number of top fans supported (max) | 3 |
| Top fans diameters supported | 120,140 mm |
| Number of bottom fans supported (max) | 3 |
| Bottom fans diameters supported | 120,140 mm |
| Fan speed | 1300 - 1500 RPM |
| Liquid cooling capability | Yes |
| Bottom radiator sizes supported | 120,140,240,280,360,420 mm |
| Fan speed control | Yes |
| Side radiator sizes supported | 120,140,240,280,360 mm |
| Maximum air pressure | 1.49 mmH2O |
| Fan 2 maximum airflow | 51.37 cfm |
| Fan 2 maximum air pressure | 1.1 mmH2O |
| Pulse-width modulation (PWM) support | Yes |
| Storage | |
| Supported HDD sizes | 2.5,3.5" |
| Weight & dimensions | |
| Width | 327 mm |
| Depth | 532 mm |
| Height | 484 mm |
| Weight | 16.8 kg |
| Packaging data | |
| Package width | 431 mm |
| Package height | 632 mm |
| Package depth | 572 mm |
| Package weight | 18.7 kg |
| Other features | |
| Maximum airflow | 56 cfm |
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