This article covers be quiet! CPUクーラー Pure Loop 280mm 簡易水冷 Intel 1700 1200 2066 1150 1151 1155 2011 Square ILM.

Overview

The be quiet! Pure Loop 280mm is a 280mm all-in-one liquid CPU cooler that prioritizes silent operation without sacrificing thermal performance. It comes equipped with a dual-chamber pump that minimizes vibration and noise, plus two Pure Wings 2 140mm PWM fans that spin up to 1600 RPM while keeping acoustic output at just 38.1 dBA at full speed. The black aluminum radiator features a subtle white LED illumination that adds a touch of style without being flashy. Priced around ¥11,600 (roughly $80 USD), this cooler occupies a comfortable mid-range spot — more capable than high-end air coolers, yet more affordable than premium 360mm AIOs.

Connectivity & Compatibility

The Pure Loop 280mm supports Intel LGA 1200/2066/1150/1151/1155/2011(-3) Square ILM and AMD AM4/AM3(+) sockets. Intel LGA 1700 and AMD AM5 are not officially listed, so you may need a separate retention kit if you're building with a recent platform. The pump uses a standard 3-pin fan header for power (drawing only 3.6W), while the two fans connect via a PWM splitter to the motherboard's CPU_FAN header. The radiator measures 317mm × 140mm × 52mm (depth includes fans), requiring a case with 280mm radiator support — typically two 140mm fan mounts side by side. Tube length is 400mm, which is generous enough for most mid-tower and full-tower cases.

Product Info

Released in 2020, the be quiet! Pure Loop 280mm remains widely available through major retailers, with a typical street price of ¥11,596 in Japan (, July 2026). The product comes with a 3-year warranty from be quiet!, and the package includes the radiator, pump block with pre-applied thermal paste, two Pure Wings 2 140mm PWM fans, mounting hardware for Intel and AMD (including backplate), fan screws, and manual. The cooler occupies a sensible mid-tier position: it delivers sufficient cooling capacity for mainstream high-end CPUs (e.g., Core i7 and Ryzen 7) under sustained loads, while keeping noise levels far lower than most 240mm AIOs or high-RPM air towers.

Best Use Cases

Silent PC builders: The combination of a decoupled pump motor and fluid-dynamic-bearing fans makes this cooler nearly inaudible during light workloads. At full fan speed you'll hear airflow but no motor whine or pump chatter. One caveat: the pump runs at a fixed speed (5,500 RPM), so it emits a constant hum — users seeking absolute silence under any condition should consider a fanless air cooler instead. Mid-range to high-end CPU users: The 280mm radiator provides roughly 30% more surface area than a 240mm model, giving it headroom for CPUs like the Ryzen 7 7800X3D or Core i7-14700K under all-core workloads. However, for serious overclocking of a 16-core Ryzen 9 or a 24-core Core i9, a 360mm AIO or custom loop would be more appropriate. Case owners with 280mm mounting: If your case has dual 140mm fan mounts in the top or front, this cooler is easy to install. Ensure the radiator + fan thickness (52mm) fits without interfering with tall RAM sticks or VRM heatsinks — most modern mid-towers have enough clearance. Users who dislike excessive RGB: The white LED is subtle and not addressable, so if you want a clean, professional look without rainbow effects, this is a great match. If you prefer full RGB synchronization, look elsewhere.

Product Disclosure (Amazon)

  • Manufacturer: be quiet!
  • ASIN: B08K3NHL5Q
  • Note: This article covers a manufacturer-made product based on Amazon listing details.