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The Be Quiet! Straight Power E9 580W power supply will be a very popular choice among enthusiast users who want to build the quietest system possible. In this regard it is one of the most impressive power supplies we have tested to date, barely registering any noise emissions at all via our test equipment, even when fully loaded.
Aesthetically, these designs are both appealing and unique. The orange trim is instantly recognisable as ‘be quiet!', but also has a practical implementation in reducing fan related vibration. The modular cabling is high quality and the chassis paintwork proves resilient to surface damage.
Technically, the FSP design is competent, accomplishing impressive noise suppression and high levels of efficiency. We noticed minor load regulation fluctuation, noticeable during the intensive Cross loading test but not significant enough to raise a red flag. The creditable efficiency helps ensure the fan never has to be ruthlessly tasked.
Be Quiet! are currently producing a wide range of fantastic power supplies, specifically directed to the enthusiast audience who may be susceptible to not only fan noise, but annoying vibration hum. This Straight Power E9 design is one of the quietest on the market, and thanks to modular cabling, the build can be clean and tidy.
Currently, in the United Kingdom, this product retails for £101.50 at Scan, so it certainly costs more than many competing products in the same sector. That said, If noise is a primary concern then it certainly deserves to be shortlisted.
Pros:
- Looks great.
- one of the quietest power supplies we have tested to date, even when loaded.
- good overall internal design.
- modular.
Cons:
- It has a high price tag.
Kitguru says: If you are in the market for a quiet, mid range system, then this should be shortlisted.
