Bitfenix Whisper Series 550W PSU Review

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Tom's Hardware Guide published a review on Bitfenix Whisper Series 550W PSU A quote from the article:
Bitfenix recently released its Whisper PSU family, which, as it name implies, promises quiet operation. This review focuses on the 550W model, offering 80 PLUS Gold efficiency and fully modular cabling.
 Bitfenix Whisper Series 550W PSU Review @ Toms Hardware