Fractal Design Prisma AL-18 PWM Computer Case Fan - Multicolor
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Product Information
Full details
The Fractal Design Prisma AL-18 PWM is a high-performance 180 mm cooling solution designed for users who prioritize massive airflow and integrated ARGB aesthetics in their PC builds. Its 38 mm thick blades and PWM speed range make it ideal for cooling demanding systems, though its oversized footprint requires users to ensure their specific computer case supports 180 mm fan mounts before purchase.
All features
| Colour | Multicolor |
|---|---|
| Model Part Number | FD-FAN-PRI-AL18-PWM-2P |
| Brand | Fractal Design |
Extended Product Information
FAQs
Can I use these fans on a standard 120 mm fan mount?
No, these are 180 mm fans and require specific mounting points (165 x 165 mm) which are not found on standard 120 mm or 140 mm mounts.
Are these fans suitable for liquid cooling radiators?
While they provide great static pressure, you must ensure your radiator supports 180 mm fans, which is rare for standard AIO liquid coolers.
Do I need a separate RGB controller?
You can connect them directly to your motherboard's 5V ARGB header, but an optional R1 controller can be purchased for manual color adjustments.
How long is the warranty/lifespan?
The fan features a mean time between failures (MTBF) of 90,000 hours, ensuring long-term reliability for your cooling system.
Can I daisy-chain the power cables?
The ARGB cables are designed for daisy-chaining to simplify wiring; however, ensure you do not exceed the power limit of your motherboard's header.
Troubleshooting
Fan speed is not adjusting via PWM
Ensure the fan is connected to a 4-pin PWM header on your motherboard and check your BIOS settings to verify that the fan control mode is set to PWM rather than DC.
RGB lighting not syncing with motherboard
Verify that the RGB cable is connected to the 5V addressable RGB header, not a 12V RGB header, and confirm that the cable is firmly seated.
Excessive noise or vibration
Ensure that the synthetic rubber corners are properly installed and that the mounting screws are tight enough to secure the frame without overtightening.
Pros and Cons
Pros
- Exceptional airflow performance for larger cases
- Quiet operation at lower RPM settings
- Wide compatibility with industry-standard RGB software
- Easy cable management with daisy-chaining capability
- Durable build with long-life sleeve bearings
Cons
- Large 180 mm diameter is not compatible with standard 120/140 mm fan mounts
- Requires specific 165 x 165 mm screw hole spacing
- Thick 38 mm profile may conflict with tight clearance builds
Setup, Compatibility & Care
Before installation, verify your PC case supports 180 mm fans and matches the 165 x 165 mm screw hole mounting pattern. To install, secure the fan using the provided screws into the designated chassis mounts. Connect the 4-pin PWM header to a chassis fan port on your motherboard to enable speed control. For RGB functionality, connect the addressable header to your motherboard's 5V ARGB header or a dedicated controller. To maintain performance, use compressed air to clear dust from the blades every few months. Avoid using liquid cleaners directly on the bearing or electrical components.