Discontinued Products
FOCUS PX
The Center of Attention
850 W
750 W
650 W
550 W
FOCUS PX
The newly upgraded FOCUS PX and GX series are the successors to the FOCUS PLUS Series, which became an instant top seller in the power supply market after its launch in 2017. In 2019, Seasonic engineers have made improvements to the popular series such as removing the inline capacitors on the supplied cables. Besides the small change in the series naming, the PSU housing and its packaging are also updated to be in line with the concept of the OneSeasonic Initiative.
-
The FOCUS PX Series achieves 80 PLUS® Platinum certification with its 92 % efficiency at 50 % system load.80 PLUS® Platinum Certified
-
Warranty
10 Years
-
Cabling
Fully Modular
-
140 mm (L) x 150 mm (W) x 86 mm (H)
Dimensions
-
ATX Specifications
ATX 12V
-
80 PLUS® Platinum Certified
The FOCUS PX Series achieves 80 PLUS® Platinum certification with its 92 % efficiency at 50 % system load. -
10 Years
Warranty -
Fully Modular
Cabling -
Dimensions
140 mm (L) x 150 mm (W) x 86 mm (H) -
ATX 12V
ATX Specifications
-
80 PLUS® Platinum Certified
The FOCUS PX Series achieves 80 PLUS® Platinum certification with its 92 % efficiency at 50 % system load. -
10 Years
Warranty -
Fully Modular
Cabling -
Dimensions
140 mm (L) x 150 mm (W) x 86 mm (H) -
ATX 12V
ATX Specifications
-
80 PLUS® Platinum Certified
The FOCUS PX Series achieves 80 PLUS® Platinum certification with its 92 % efficiency at 50 % system load. -
10 Years
Warranty -
Fully Modular
Cabling -
Dimensions
140 mm (L) x 150 mm (W) x 86 mm (H) -
ATX 12V
ATX Specifications
80 PLUS® Platinum Certified
The FOCUS PX Series achieves 80 PLUS® Platinum certification with its 92 % efficiency at 50 % system load.
10 Years
Warranty
Fully Modular
Cabling
Dimensions
140 mm (L) x 150 mm (W) x 86 mm (H)
ATX 12V
ATX Specifications
80 PLUS® Platinum Certified
The FOCUS PX Series achieves 80 PLUS® Platinum certification with its 92 % efficiency at 50 % system load.
10 Years
Warranty
Fully Modular
Cabling
Dimensions
140 mm (L) x 150 mm (W) x 86 mm (H)
ATX 12V
ATX Specifications
80 PLUS® Platinum Certified
The FOCUS PX Series achieves 80 PLUS® Platinum certification with its 92 % efficiency at 50 % system load.
10 Years
Warranty
Fully Modular
Cabling
Dimensions
140 mm (L) x 150 mm (W) x 86 mm (H)
ATX 12V
ATX Specifications
80 PLUS® Platinum Certified
The FOCUS PX Series achieves 80 PLUS® Platinum certification with its 92 % efficiency at 50 % system load.
10 Years
Warranty
Fully Modular
Cabling
Dimensions
140 mm (L) x 150 mm (W) x 86 mm (H)
ATX 12V
ATX Specifications
FOCUS PX-850 Unboxing
Hybrid Silent Fan Control – Fanless up to about 30 % load
The industry’s first, Seasonic patented, advanced three-phased thermal control achieves optimal balance between silence and cooling. This Hybrid Silent Fan Control functions in three operational stages: Fanless Mode, Silent Mode, and Cooling Mode.
-
Reduced noise without increase in temperature
-
Extended fan life due to the reduced number of fan rotations
-
Optimized heat dissipation at all times
-
Unsurpassed silent performance in Fanless Mode
Reduced noise without increase in temperature 
Extended fan life due to the reduced number of fan rotations 
Optimized heat dissipation at all times 
Unsurpassed silent performance in Fanless Mode 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.
-
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.
FOCUS Hybrid Fan Control Button Explained
Gallery
850 W
750 W
650 W
550 W
0 /
0
0 /
0
0 /
0
0 /
0
Specifications
850 W
750 W
650 W
550 W
| Technical Specifications | ||
|---|---|---|
| 80PLUS® | Platinum | |
| Cybenetics Efficiency Level | TBA | |
| Cybenetics Noise Level | TBA | |
| Form Factor | ATX/EPS | |
| Dimensions | 140 × 150 × 86 mm | |
| Fan Information | Fan Size | 120 mm |
| Fan Control | S3FC (including Fanless Mode) | |
| Fan Bearing | Fluid Dynamic Bearing | |
| Life Expectancy | 50,000 hours at 40 °C, 15 % - 65 % RH | |
| Cable Information | Modularity | Fully Modular |
| Electrical Features | Operating Temperature | 0 - 50 °C (derating from 100 % to 80 % from 40 °C to 50 °C linearly) |
| MTBF @ 25 °C, excl. fan | 100,000 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 | 10 Years | |
| Power Output | ||||||
|---|---|---|---|---|---|---|
| AC Input | 100 V - 240 V | |||||
| 11 - 5.5 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 | 70 A | 0.3 A | 3 A | |
| 100 W | 840 W | 3.6 W | 15 W | |||
| Total continuous power | 850 W | |||||
| Technical Specifications | ||
|---|---|---|
| 80PLUS® | Platinum | |
| Cybenetics Efficiency Level | TBA | |
| Cybenetics Noise Level | TBA | |
| Form Factor | ATX/EPS | |
| Dimensions | 140 × 150 × 86 mm | |
| Fan Information | Fan Size | 120 mm |
| Fan Control | S3FC (including Fanless Mode) | |
| Fan Bearing | Fluid Dynamic Bearing | |
| Life Expectancy | 50,000 hours at 40 °C, 15 % - 65 % RH | |
| Cable Information | Modularity | Fully Modular |
| Electrical Features | Operating Temperature | 0 - 50 °C (derating from 100 % to 80 % from 40 °C to 50 °C linearly) |
| MTBF @ 25 °C, excl. fan | 100,000 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 | 10 Years | |
| Power Output | ||||||
|---|---|---|---|---|---|---|
| AC Input | 100 V - 240 V | |||||
| 10 - 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 | |
| Cybenetics Efficiency Level | TBA | |
| Cybenetics Noise Level | TBA | |
| Form Factor | ATX/EPS | |
| Dimensions | 140 × 150 × 86 mm | |
| Fan Information | Fan Size | 120 mm |
| Fan Control | S3FC (including Fanless Mode) | |
| Fan Bearing | Fluid Dynamic Bearing | |
| Life Expectancy | 50,000 hours at 40 °C, 15 % - 65 % RH | |
| Cable Information | Modularity | Fully Modular |
| Electrical Features | Operating Temperature | 0 - 50 °C (derating from 100 % to 80 % from 40 °C to 50 °C linearly) |
| MTBF @ 25 °C, excl. fan | 100,000 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 | 10 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® | Platinum | |
| Cybenetics Efficiency Level | TBA | |
| Cybenetics Noise Level | TBA | |
| Form Factor | ATX/EPS | |
| Dimensions | 140 × 150 × 86 mm | |
| Fan Information | Fan Size | 120 mm |
| Fan Control | S3FC (including Fanless Mode) | |
| Fan Bearing | Fluid Dynamic Bearing | |
| Life Expectancy | 50,000 hours at 40 °C, 15 % - 65 % RH | |
| Cable Information | Modularity | Fully Modular |
| Electrical Features | Operating Temperature | 0 - 50 °C (derating from 100 % to 80 % from 40 °C to 50 °C linearly) |
| MTBF @ 25 °C, excl. fan | 100,000 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 | 10 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 A | 0.3 A | 3 A | |
| 100 W | 540 W | 3.6 W | 15 W | |||
| Total continuous power | 550 W | |||||
Cables
850 W
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)
2 connectors
3 cables
810 mm
SATA
4 connectors
1 cable
860 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
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)
2 connectors
2 cables
810 mm
SATA
4 connectors
1 cable
860 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
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)
2 connectors
2 cables
810 mm
SATA
4 connectors
1 cable
860 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
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
2 cables
810 mm
SATA
4 connectors
1 cable
860 mm
SATA
4 connectors
1 cable
570 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
-
Datasheet
-
Quick Installation Guide
-
User Manual