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be quiet! Pure Loop 2 FXCOOL

COOLCPU Coolers·be quiet!

be quiet! Pure Loop 2 FX

4.3
Shed ScoreEditorial rating out of 5, based on specs, build quality and value in its class.
  • Near-silent operation
  • Maintenance-free sealed loop
  • Subtle ARGB styling

The be quiet!

  • Radiator Sizes240mm / 280mm / 360mm
  • Noise Level24.5 - 36.4 dB(A)
  • Socket CompatibilityIntel LGA1700/1200/115x, AMD AM5/AM4
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// Datasheet

Technical specifications

PURE-LOOP-2-FX5 fields
Radiator Sizes240mm / 280mm / 360mm
Noise Level24.5 - 36.4 dB(A)
Socket CompatibilityIntel LGA1700/1200/115x, AMD AM5/AM4
Fan ModelPure Wings 3 PWM, up to 2000 RPM
Warranty3 years

// Verdict

Our take

4.3

The be quiet! Pure Loop 2 FX delivers on the brand's core promise: whisper-quiet, dependable liquid cooling without unnecessary bells and whistles. With improved pump performance over its predecessor and tasteful ARGB styling, it's a strong pick for builders who prioritize silence and stability over flashy RGB theatrics. It may not top performance charts against premium competitors, but for most mainstream and enthusiast builds, it offers excellent thermal control and near-silent acoustics.

// Trade-offs

Pros and cons

+What we like

  • Very quiet operation even under load
  • Clean aesthetic with subtle ARGB accents
  • Solid cooling performance for mid-to-high TDP CPUs
  • Straightforward installation with modern mounting hardware
  • Includes quality Pure Wings 3 fans
  • Backed by be quiet!'s reputation for reliability

−Watch out for

  • ARGB header cable management can be fiddly
  • Pump top lighting is not as vibrant as some competitors
  • 360mm variant requires a spacious case
  • Price premium compared to entry-level AIOs
  • No software for custom fan/pump curves beyond motherboard control

// Feature set

Key features

  • 01All-in-one liquid CPU cooler with pre-filled, maintenance-free loop
  • 02Available in 240mm, 280mm, and 360mm radiator sizes
  • 03Second-generation pump-cooler unit with improved flow rate design
  • 04ARGB-enabled pump top with addressable RGB lighting
  • 05Pure Wings 3 PWM fans included for optimized airflow and acoustics
  • 06Wide CPU socket compatibility including Intel LGA1700/1200 and AMD AM5/AM4
  • 07Low-noise operation rated as low as 24.5 dB(A)
  • 08Copper cold plate for efficient heat transfer

// Long read

Full review

The be quiet! Pure Loop 2 FX is an all-in-one liquid CPU cooler built for enthusiasts and everyday PC builders who want strong thermal performance without sacrificing the near-silent operation the brand is known for. Available in 240mm, 280mm, and 360mm radiator sizes, it uses a redesigned pump-cooler unit paired with the brand's latest generation of fans to handle demanding processors, including high-core-count chips from both Intel and AMD. The "FX" designation refers to the inclusion of addressable RGB lighting integrated into the pump head and fans, giving builders a way to add visual flair to their rig while still relying on be quiet!'s engineering pedigree for dependable cooling.

At the heart of the Pure Loop 2 FX is an improved pump design that reduces vibration and noise while maintaining steady coolant flow, paired with a copper cold plate that ensures efficient heat transfer away from the CPU. The included Light Wings PWM fans spin with a fine-tuned blade geometry and dependable fluid-dynamic bearings, delivering solid airflow and static pressure while keeping acoustic output low, a hallmark of be quiet!'s product philosophy. The ARGB lighting on both the pump top and fans can be synchronized with popular motherboard software from ASUS, MSI, Gigabyte, and ASRock, allowing seamless integration into existing RGB ecosystems without requiring a separate controller for basic functionality.

Installation is designed to be straightforward, with a universal mounting mechanism compatible with current Intel LGA sockets as well as AMD AM4 and AM5 platforms, making it a flexible option for both new builds and upgrades. The tubing is sleeved for durability and aesthetic consistency, resisting kinks and wear over time, while the radiator's build quality supports long-term reliability in a variety of case configurations. For builders in the PC Components & Custom Builds space who want an AIO cooler that balances strong thermal headroom, quiet acoustics, and customizable lighting, the be quiet! Pure Loop 2 FX positions itself as a well-rounded liquid cooling solution that doesn't force a compromise between performance and a clean, controlled sound profile.

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