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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: Platinum efficiency, other marketing jargon. Nice and quiet
Cons: none until it died suddenly after turning PC off
Overall Review: Died after 3 years. I just had to put my even older antec EA-650 in this PC (6700k/GTX 1070) that is still running strong. I bought that PSU over 7 years ago too.
Pros:
I haven't experienced the coil whine that some of these units are supposedly afflicted with.
Enjoying the secure feeling of top notch build quality.
Cons: Edit 10/2018 unit is finally dead after 5 years.
Overall Review:
4670K
Z87M extreme4
Gskill Ripjaws 1866 C8
Asus GTX 670
Will update if coilwhine suddenly starts
Pros: Got this for a great price, and its performed extremely well. Moved it into an older 1336 system that could peak draw 600W and its handled it fine. Fan barely runs.
Cons: Cables are all right angle so it can't easily fit any drives directly against a panel.
Pros:
- Has enough juice for a Threadripper
- 80PLUS Platinum = 90+% efficiency
Cons: - Costs some money
Pros: Very quiet, even when fan kicks on, which has only happened during stress testing. Good quality cables.
Cons: CPU cable was a bit short, and barely reached across my ATX board.
Overall Review: SATA cables were tough to fit on the SSD-specific 2.5" brackets behind my motherboard, but someone probably makes a cable that would lay flat and work better.
Pros:
-Seasonic Brand
-Fully Modular
-Reliable PSU
-Nicely Packaged
-PLAT Rating
Cons: None at the moment
Overall Review: Got this PSU on sale for frond 80$ after rebate. Crazy good deal for a fully modular sea sonic plat PSU. You want a PSU to last you awhile and i'm confident this one will.
Pros:
- quiet
- modular
Cons:
- failed within 5 months, tested with a PSU tester as dead
- SeaSonic RMA support is very poor
Overall Review:
SeaSonic USA has a RMA department that goes to voicemail. That mailbox is full. This is not acceptable for a premium-priced piece of hardware.
Given the RMA difficulties other reviewers have had, I would recommend being careful before buying a SeaSonic product.
Buyer beware.
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Pros: Worked great for 6 years 6 months then suddenly died.
Luckily died within warranty.
Cons: Did have coil whine, however was not high pitched.
Overall Review: It lasted longer than most power supplies in this day and age.