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Seasonic Platinum Series 660W Power Supply Review

Manufacturer: Seasonic

A Detailed Look

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The Seasonic Platinum 660W power supply features a black matte finish and measures 160mm (6.3”) deep. It uses a single 120mm fan on the bottom for cooling.

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The backside panel features an open grill and includes a power receptacle and master On-Off switch.  The honey comb grill allows air to exhaust out of the power supply for cooling the internal components with minimal turbulence and noise.

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The Platinum 660 uses a high quality 120mm, Sanyo Denki San Ace fan (9S1212F404) that incorporates dual ball bearings for enhanced reliability and long life. The 7 sculptured blades are designed to optimize airflow and reduce noise.  The fan features Pulse Width Modulation (PWM) to integrate with the variable speed Seasonic Hybrid Silent Fan Control circuit.

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One of the unique features of the Platinum 660W PSU is the ability to operate in either S3FC fanless-silent-cooling mode or S2FC silent-cooling mode.  A small two-position selector switch on the front panel allows selecting Hybrid (S3FC fanless-silent-cooling mode) or Normal (S2FC silent-cooling mode). The Hybrid S3FC mode is designed to turn off the fan at lower power levels and the Normal S2FC mode keeps the fan running all the time.  The new high efficiency design of the Platinum Series also helps by generating less waste heat. And if you aren't abscessed with running fanless and prefer a little air movement with a virtually silent fan, then the Normal S2FC silent-cooling mode is for you!

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(Courtesy of Seasonic)

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The Platinum 660W power supply is fully modular and has a good assortment of cables/connectors.  All of the cables are a flat, ribbon-style cable except for the main 24-pin ATX power cable, which is covered with a black, braided plastic mesh sleeving.

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• (1) Main power connector (24-pin/20-pin) 610mm
• (1) ATX12V/EPS12V (4-pin + 4-pin) 650mm
• (1) EPS12V (8-pin) 650mm
• (4) PCI Express (6+2-pin) 600mm
• (5) Peripheral Optical/HDD (4-pin)
• (10) Peripheral Serial ATA (15-pin)
• (1) Peripheral FDD (4-pin) adapter
 

January 25, 2013 | 02:51 PM - Posted by Anonymous (not verified)

F, bought the 1000watt version back in May and it came with the ugly colored modular cables.

May 1, 2013 | 08:42 PM - Posted by Anonymous (not verified)

hello there, I have a question, since you got that colored modular cables, did you report that to seasonic and did you make a request of being provided with black cables for it? just wondering because if I will be getting one, I might get colored cables too.

January 25, 2013 | 03:42 PM - Posted by Patrick (not verified)

Love me some Seasonic.

January 27, 2013 | 08:40 PM - Posted by pdjblum

Seasonic is always my first choice when I am in the market for a new psu. Not only are the psu's excellent, but so too is their customer service.

January 31, 2013 | 07:52 AM - Posted by SS (not verified)

Just got two of these and both of them had coils noise and one also coil whine. Sent them back, very disappointed. (Tested on several platforms and the noise was persistend, even on professional APC UPS)

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