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be quiet! Pure Power 9 600W PSU review

Rating: 8.0.

Today we are looking at one of the new power supplies from leading German brand be quiet! The new Pure Power 9 range is a dual 12V rail design which has achieved 80 Plus Silver certification. The new design adopts a 120mm noise optimised fan and is modular, with high grade flat cables set to aid the appearance of the final system build.

The Pure Power 9 supplies will be offered in 400 watt (£54.99), 500 watt (£64.99), 600 watt and 700 watt (£89.99) capacities. Today we look at the 600 watt model, which is set to hit retail around the £74.95 inc vat mark.


It is not a shock considering their name, but be quiet! have always placed a focus on releasing near silent products, and we have been impressed over the years with their coolers and fan designs.


  • Continuous power and two 12V rails ensure rock-solid voltage stability for powerful multi-GPU systems (Pure Power 9 CM can provide up to 96% of its power only on 12V rails).
  • 80PLUS® Silver certification and up to 91% power conversion efficiency.
  • Exceptionally quiet operation achieved through an array of careful optimizations, including use of a silence-optimized 120mm be quiet! fan.
  • Stable operation in its class thanks to Active Clamp + SR power conversion technology.
  • Modular cable management with high-quality flat cables for PCI Express connectors and drives.
  • All black DC wires for a clean and modern look.
  • NVIDIA SLI Ready and AMD CrossFireX certifications allow you to build powerful multi-GPU systems.
  • Extensive compatibility with latest specifications, including energy-saving requirements of Intel C6/C7, ErP 2014 and Energy Star 6.0 guidelines.
  • Product conception, design and quality control in Germany.

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