be quiet! updated its entry-level power supplies today with the Pure Power 9 series. The 80 Plus Silver-certified design is an evolution of the company's older L8 series. The major improvement in this model is its "Active Clamp + SR" design, which is claimed to improve efficiency and regulation compared to the outgoing model. The Pure Power 9 series also uses an improved fan motor and bearing to reduce noise levels.
The Pure Power 9 series includes four models ranging from 400W to 700W. These semi-modular units come with a raft of protection features, including safeguards against over-current, over- and under-voltage, short-circuit, overload, and overheating conditions. Prices for the line range from $55 to $85.
KitGuru put the 600W Pure Power 9 through its paces. While the site gave this PSU a great rating for its performance, the review did raise some concerns about the Chinese main capacitor's reputation for longevity. Still, the unit garnered praise for its higher-than-rated peak power delivery and quiet fan.
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