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Be Quiet! Silent Loop 3 240mm specifications and in-depth review

Be Quiet! Silent Loop 3 240mm

Manufacturer: Be Quiet!

The Be Quiet! Silent Loop 3 240mm is a 240mm all-in-one liquid CPU cooler designed for a broad range of Intel and AMD platforms, including LGA 1851, LGA 1700, AM4, and AM5 sockets. It ships with thermal paste included and features RGB lighting integrated into its design, alongside fluid dynamic fan bearings that help maintain consistent operation across varying speeds.

The cooler pairs a 277 × 120 × 27 mm radiator with two fans capable of reaching 2500 RPM and a combined maximum airflow of 130.3 CFM, while the pump tops out at 3500 RPM. Audible noise spans from 18.7 dB at its quietest to 36.9 dB at full load, and the water block measures 93.5 × 80 × 56 mm. The complete assembly weighs 1380 g and is backed by a 3-year warranty.

Pros
  • Supports a broad range of CPU sockets across both Intel and AMD platforms, including LGA 1851, LGA 1700, AM4, and AM5
  • Minimum noise level of 18.7 dB makes it relatively quiet during low-demand operation
  • Thermal paste is included in the box, removing the need for a separate purchase before installation
  • Fluid dynamic bearings on the fans contribute to smoother and quieter long-term operation
  • RGB lighting is built in for users who want illuminated builds
  • Backed by a 3-year warranty
Cons
  • Maximum noise level of 36.9 dB at full fan speed may be noticeable in quiet environments
  • The 240mm radiator size may limit cooling headroom for high thermal output processors compared to larger 280mm or 360mm form factors, though no larger variant data is provided
  • Does not include a built-in display on the pump head for those who prefer on-unit monitoring
  • Total weight of 1380g makes it one of the heavier AIO options to manage during installation
Who is this for?

This cooler is a practical choice for builders working with both current and previous-generation platforms, given its compatibility with Intel sockets from LGA 1155 through to LGA 1851, as well as AMD AM4 and AM5. Users who value a quieter system at lighter workloads will appreciate the 18.7 dB minimum noise floor, and those who prioritize a tidy, illuminated build will find the included RGB lighting and bundled thermal paste convenient. It suits PC builders looking for a 240mm AIO with a straightforward installation experience across a wide range of compatible systems.

Who is this NOT for?

Users running processors with very high sustained thermal output may find the 240mm radiator insufficient to maintain optimal temperatures under prolonged heavy loads. Those who prefer a completely silent system at all times could be bothered by the 36.9 dB maximum noise level during peak fan operation. Additionally, builders who want an on-unit pump head display for real-time monitoring will need to look elsewhere, as this cooler does not include that feature, and the 1380g total weight may make handling awkward in cramped cases during installation.

Cooling:

Cooling type AIO liquid
Max fan RPM 2500 rpm
Max pump RPM 3500 rpm
Max airflow 130.3 CFM
Number of fans 2

This cooler uses an AIO liquid cooling solution, pairing two fans with a maximum speed of 2500 RPM and a pump that reaches up to 3500 RPM. Together, the dual fans deliver a combined maximum airflow of 130.3 CFM, allowing the system to move a substantial volume of air through the radiator under demanding conditions.

Dimensions:

Heatsink/water block height 93.5 mm
Heatsink/water block width 80 mm
Heatsink/water block depth 56 mm
Radiator size 240 mm
Radiator height 27 mm
Radiator length 277 mm
Radiator width 120 mm

The 240mm radiator measures 277 mm in length, 120 mm in width, and 27 mm in height, giving a clear picture of the space it will occupy inside a case. The water block has a height of 93.5 mm, a width of 80 mm, and a depth of 56 mm, which reflects the footprint it places on the CPU socket area.

General info:

CPU socket LGA 1851, LGA 1700, LGA 1200, LGA 1150, LGA 1151, LGA 1155, AM4, AM5
Audible noise (min) 18.7 dB
Audible noise (max) 36.9 dB
weight 1380 g
warranty period 3 years

This cooler is compatible with a wide range of CPU sockets, covering Intel LGA 1851, LGA 1700, LGA 1200, LGA 1150, LGA 1151, and LGA 1155, as well as AMD AM4 and AM5. Audible noise ranges from a low of 18.7 dB up to a maximum of 36.9 dB depending on load, and the complete assembly weighs 1380 g. The product is backed by a 3-year warranty.

Features:

Fan bearings Fluid dynamic bearings
has RGB lighting ✓
Thermal paste Included
Has a display ✕

The fans use fluid dynamic bearings, which is the bearing type chosen for this cooler. RGB lighting is included, adding addressable illumination to the build, while thermal paste comes in the box so no separate purchase is needed before installation. The cooler does not feature a built-in display.

Final Verdict

The Be Quiet! Silent Loop 3 240mm presents a well-rounded AIO liquid cooler with notably broad platform support, covering a wide span of Intel and AMD sockets that makes it a versatile fit for a variety of builds old and new. Its 18.7 dB minimum noise level, fluid dynamic fan bearings, and included thermal paste reflect a design that prioritizes ease of use and quieter day-to-day operation. While users pushing high-thermal-load processors or seeking absolute silence at peak loads may find the 240mm form factor and 36.9 dB ceiling limiting, the Silent Loop 3 240mm remains a capable and feature-complete choice for builders who want reliable liquid cooling with RGB illumination and wide compatibility in a single package.