Discontinued Products
PRIME SNOW SILENT
PRIME SNOWSILENT
Its Ultra-high efficiency and outstanding performance are the fine results of Seasonic’s continuous commitment to innovation and advancement. Improved low-load efficiency, highly suppressed ripple noise and a generous 12-year manufacturer’s warranty are just some of the characteristics that set these series apart from other power supplies on the market.
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The PRIME Snow Silent 750 Titanium achieves the highest level of 80 PLUS® Titanium certification on the market with its 94 % efficiency at 50 % system load.80 PLUS® Titanium Certified
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Warranty
12 Years
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Cabling
Full Modular
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170 mm (L) x 150 mm (W) x 86 mm (H)
Dimensions
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ATX 12 V
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80 PLUS® PLATINUM
The PRIME Snow Silent 650 Platinum achieves 80 PLUS® Platinum certification with its 92 % efficiency at 50 % system load. -
12 Years
Warranty -
Full Modular
Cabling -
Dimensions
140 mm (L) x 150 mm (W) x 86 mm (H) -
ATX 12 V
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80 PLUS® GOLD
The PRIME Snow Silent 550 Gold achieves 80 PLUS® Gold certification with its 90 % efficiency at 50 % system load. -
12 Years
Warranty -
Full Modular
Cabling -
Dimensions
140 mm (L) x 150 mm (W) x 86 mm (H) -
ATX 12 V
80 PLUS® Titanium Certified
The PRIME Snow Silent 750 Titanium achieves the highest level of 80 PLUS® Titanium certification on the market with its 94 % efficiency at 50 % system load.
12 Years
Warranty
Full Modular
Cabling
Dimensions
170 mm (L) x 150 mm (W) x 86 mm (H)
ATX 12 V
80 PLUS® PLATINUM
The PRIME Snow Silent 650 Platinum achieves 80 PLUS® Platinum certification with its 92 % efficiency at 50 % system load.
12 Years
Warranty
Full Modular
Cabling
Dimensions
140 mm (L) x 150 mm (W) x 86 mm (H)
ATX 12 V
80 PLUS® GOLD
The PRIME Snow Silent 550 Gold achieves 80 PLUS® Gold certification with its 90 % efficiency at 50 % system load.
12 Years
Warranty
Full Modular
Cabling
Dimensions
140 mm (L) x 150 mm (W) x 86 mm (H)
ATX 12 V
FLUID DYNAMIC FAN BEARING
High performance Fluid Dynamic Bearing (FDB) fans are designed to take advantage of the impact absorbance effects of oil. They are extremely reliable and generate considerably less operating noise and heat than ball bearing fans. The lubrication of the bearing surface reduces friction and vibration and therefore lowers overall power consumption. Due to the effortless, quieter rotations and its robust construction, this reliable fan technology also greatly increases the lifespan of the fan.
- When the fan shaft rotates, high pressure oil drifts along the grooves of the bearing sleeve to generate a thin layer of lubrication between the bearing faces.
- As the speed increases, so does dynamic oil pressure and the shaft is lifted from the bearing to create smooth, effortless rotations. The herringbone shape of the groves helps to efficiently channel the lubricant and avert leakage.
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When the fan shaft rotates, high pressure oil drifts along the grooves of the bearing sleeve to generate a thin layer of lubrication between the bearing faces.
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As the speed increases, so does dynamic oil pressure and the shaft is lifted from the bearing to create smooth, effortless rotations. The herringbone shape of the groves helps to efficiently channel the lubricant and avert leakage.
PREMIUM HYBRID FAN CONTROL
Seasonic’s vast experience in designing the most silent and efficient power supplies on the market was translated into the development of Hybrid Mode; a state-of-the-art fan control that enables users to keep the overall fan noise at the lowest possible level.
Specifications
750 W
650 W
550 W
| Technical Specifications | ||
|---|---|---|
| 80PLUS® | Titanium | |
| Form Factor | ATX/EPS | |
| Dimensions | 170 × 150 × 86 mm | |
| Fan Information | Fan Size | 135 mm |
| Fan Control | Premium Hybrid Fan Control | |
| Fan Bearing | Fluid Dynamic Bearing | |
| Life Expectancy | 50,000 hours at 40 °C, 15 % - 65 % RH | |
| Cable Information | Modularity | Fully Modular |
| Cable type | Flat Black Cables | |
| Electrical Features | Operating Temperature | 0 - 50 °C (derating from 100 % to 80 % from 40 °C to 50 °C linearly) |
| MTBF @ 25 °C, excl. fan | 150,000 hours | |
| AC Input | Full Range | |
| Protection | OPP, OVP, UVP, OCP, OTP, SCP | |
| Safety and Environmental | Safety and EMC | cTUVus, TUV, CB, CCC, BSMI, EAC, CE |
| Environmental Compliance | Energy Star, RoHS, WEEE, ErP Lot 6, REACH | |
| Warranty | 12 Years | |
| Power Output | ||||||
|---|---|---|---|---|---|---|
| AC Input | 100 V - 240 V | |||||
| 9.5 - 4.5 A | ||||||
| 50 Hz - 60 Hz | ||||||
| DC Output | Rail | +3.3 V | +5 V | +12 V | -12 V | +5 VSB |
| Maximum Power | 20 A | 20 A | 62 A | 0.3 A | 3 A | |
| 100 W | 744 W | 3.6 W | 15 W | |||
| Total continuous power | 750 W | |||||
| Technical Specifications | ||
|---|---|---|
| 80PLUS® | Platinum | |
| Form Factor | ATX/EPS | |
| Dimensions | 140 × 150 × 86 mm | |
| Fan Information | Fan Size | 135 mm |
| Fan Control | Premium Hybrid Fan Control | |
| Fan Bearing | Fluid Dynamic Bearing | |
| Life Expectancy | 50,000 hours at 40 °C, 15 % - 65 % RH | |
| Cable Information | Modularity | Fully Modular |
| Cable type | Flat Black Cables | |
| Electrical Features | Operating Temperature | 0 - 50 °C (derating from 100 % to 80 % from 40 °C to 50 °C linearly) |
| MTBF @ 25 °C, excl. fan | 150,000 hours | |
| AC Input | Full Range | |
| Protection | OPP, OVP, UVP, OCP, OTP, SCP | |
| Safety and Environmental | Safety and EMC | cTUVus, TUV, CB, CCC, BSMI, EAC, CE |
| Environmental Compliance | Energy Star, RoHS, WEEE, ErP Lot 6, REACH | |
| Warranty | 12 Years | |
| Power Output | ||||||
|---|---|---|---|---|---|---|
| AC Input | 100 V - 240 V | |||||
| 9 - 4.5 A | ||||||
| 50 Hz - 60 Hz | ||||||
| DC Output | Rail | +3.3 V | +5 V | +12 V | -12 V | +5 VSB |
| Maximum Power | 20 A | 20 A | 54 A | 0.3 A | 3 A | |
| 100 W | 648 W | 3.6 W | 15 W | |||
| Total continuous power | 650 W | |||||
| Technical Specifications | ||
|---|---|---|
| 80PLUS® | Gold | |
| Form Factor | ATX/EPS | |
| Dimensions | 140 × 150 × 86 mm | |
| Fan Information | Fan Size | 135 mm |
| Fan Control | Premium Hybrid Fan Control | |
| Fan Bearing | Fluid Dynamic Bearing | |
| Life Expectancy | 50,000 hours at 40 °C, 15 % - 65 % RH | |
| Cable Information | Modularity | Fully Modular |
| Cable type | Flat Black Cables | |
| Electrical Features | Operating Temperature | 0 - 50 °C (derating from 100 % to 80 % from 40 °C to 50 °C linearly) |
| MTBF @ 25 °C, excl. fan | 150,000 hours | |
| AC Input | Full Range | |
| Protection | OPP, OVP, UVP, OCP, OTP, SCP | |
| Safety and Environmental | Safety and EMC | cTUVus, TUV, CB, CCC, BSMI, EAC, CE |
| Environmental Compliance | Energy Star, RoHS, WEEE, ErP Lot 6, REACH | |
| Warranty | 12 Years | |
| Power Output | ||||||
|---|---|---|---|---|---|---|
| AC Input | 100 V - 240 V | |||||
| 8 - 4 A | ||||||
| 50 Hz - 60 Hz | ||||||
| DC Output | Rail | +3.3 V | +5 V | +12 V | -12 V | +5 VSB |
| Maximum Power | 20 A | 20 A | 45.5 A | 0.3 A | 3 A | |
| 100 W | 540 W | 3.6 W | 15 W | |||
| Total continuous power | 550 W | |||||
Gallery
750 W
650 W
550 W
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Cables
750 W
650 W
550 W
610 mm
MB (24/20 pins)
1 connector
1 cable
650 mm
CPU (8/4 pins)
1 connector
2 cables
750 mm
PCIe (8/6 pins)
1 connector
4 cables
800 mm
SATA
4 connectors
1 cable
760 mm
SATA
4 connectors
1 cable
450 mm
SATA
2 connectors
1 cable
690 mm
Molex
3 connectors
1 cable
470 mm
Molex
2 connectors
1 cable
300 mm
Molex to SATA 3.3 Adapter
2 connectors
1 cable
101 mm
Molex to FDD Adapter
1 connector
1 cable
610 mm
MB (24/20 pins)
1 connector
1 cable
650 mm
CPU (8/4 pins)
1 connector
1 cable
750 mm
PCIe (8/6 pins)
2 connectors
2 cables
760 mm
SATA
4 connectors
1 cable
450 mm
SATA
2 connectors
1 cable
690 mm
Molex
3 connectors
1 cable
300 mm
Molex to SATA 3.3 Adapter
2 connectors
1 cable
101 mm
Molex to FDD Adapter
1 connector
1 cable
610 mm
MB (24/20 pins)
1 connector
1 cable
650 mm
CPU (8/4 pins)
1 connector
1 cable
750 mm
PCIe (8/6 pins)
2 connectors
1 cable
450 mm
SATA
2 connectors
1 cable
690 mm
Molex
3 connectors
1 cable
300 mm
Molex to SATA 3.3 Adapter
2 connectors
1 cable
101 mm
Molex to FDD Adapter
1 connector
1 cable
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Datasheet
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User Manual