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Designed to outperform, the SeaSonic SS-660XP power supply incorporates the first-class quality, reliability and stability that's required by professional system builders and DIY enthusiasts. This PSU is 80 PLUS Platinum-rated for super high efficiency, and features a strong, single +12V rail to sufficiently power your high-end CPU and even multiple-GPU setup.
Its exclusive Fully Modular Design contributes to enhanced installation convenience and interior tidiness, along with an Integrated Voltage Regulation Module for optimized efficiency. Engineered with only premium components, including premium capacitors and heavy-duty protection circuitries, the SS-660XP maintains continuous output with tight voltage regulation for trouble-free operation in any situation. The industry-first Hybrid Silent Fan Control offers flexible options to achieve the best balance between cooling and silence.
Seasonic's patented Fully Modular Design, while minimizing voltage drops and impedance, greatly maximizes efficiency and cooling to enhance overall performance and reliability.
Patent #: US8.040.686, TW381825, CN1552150, JP3171420. Patent Pending: US, DE
The industry-first, advanced three-phased thermal control balances between silence and cooling.
The Hybrid Silent Fan Control provides three operational stages: Fanless, Silent, and Cooling Mode. In addition, there is a switch provided to allow for manual selection between the Seasonic S2FC (fan control without Fanless Mode) and the S3FC (fan control including Fanless Mode).
Patent #: TW410250, CN808637, CN1980304. Patent Pending: US, JP
Pros: I burned this psu in on a old P4 system by running it nonstop for a week to stress it. Rails are dead on, no high pitched noises or voltage hum. It's the V2 version. Ability to allow the fan to run slowly for more airflow even though it's not really needed until after 50% draw. The Sanyo fan will easily outlast the PSU even running 24/7.
Cons: None, I even received my MIR for 20 bucks, it's always a bonus when those show up. A PSU of this power and quality for $90 is a steal!!
Overall Review: As other people have mentioned this psu is designed to be mounted on bottom cases due to the orientation of the sata plugs. They run bottom to top, not top to bottom. You can mount it on top but the lines would go towards to bottom of the case, bend and go back up to be correct. A tall tower case the line most likely won't make it length wise.