Delivery and Specifications

The Seasonic SS-660XP2 Platinum Series power supply is a fully modular design PSU which means that all the cables, including both the 24-pin ATX and two 8-pin EPS ones are modular as well.

Cables
Cable	Length
1 x ATX 20+4 pin	65  cm
2 x EPS/ATX 12V (8 & 4+4) pin	69 cm
4 x PCI-E 6+2 pin	64 cm
1 x 3x Molex	42, 54, 68 cm
1 x 2x Molex	32, 46 cm
2 x 4x SATA	41, 53, 65, 78 cm
1 x 2x SATA	32, 44 cm

Connectivity is perfect for a power supply of this wattage, there is also a molex to floppy adapter.

Specifications
Voltage	Current	Power
+ 3.3 V	25 A	125 Watt	660 Watt (Total)
+ 5.0 V	25 A
+ 12 V	55 A	660 Watt
- 12 V	0.5 A	6 Watt
+ 5 Vsb	3.0 A	15 Watt

The Seasonic SS-660XP2 Platinum Series power supply uses a single +12V rail design and this 660W model can provide up to 55Amps on it.



The SS-1250XM is 80Plus platinum certified. This means, that the efficiency of this psu should be over 90% at 20% load, over 92% at 50% load and over 89% at 100% load.

The full specification list includes:

• 80Plus Platinum
• OVP, UVP, OCP, SCP, OPP, OTP
• Dimensions (W x H x D): 150 mm x 86 mm x 160 mm
• 120 millimeter fan
• Semipassive fan (below 30% load)
• Warranty: 7 Years
• Price: 130 CHF

The first thing that you might notice on the list is the impressive 7 year warranty. While most PSUs are limited to 3-year one and some high-end ones come with 5-year warranty, Seasonic really surprised with 7-year warranty period, which only shows that this is a real high-end PSU in which Seasonic has full confidence. It uses pretty standard 160mm long case and also comes with a switch on the connector panel that takes it into hybrid (semi-passive) and normal (silent) operation modes.

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Page 1 - Presentation

Page 2 - Photo Gallery

Page 3 - Delivery / Specs

Page 4 - A Look Inside

Page 5 - Input/Output Power and Efficiency

Page 6 - Result Analysis and Discussion

Page 7 - Conclusion