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Built with quality components, this Seasonic FOCUS PX Platinum power supply will always provide impeccable voltage and outstanding reliability for long term use. This highly efficient unit incorporates an innovative fan control system that allows the fan to not start at low load and only start when the temperature requires cooling. If you want the fan to be always on, simply press the hybrid mode button on the back of the power supply. Fully modular, it allows for a clean, customisable installation while helping to improve internal airflow.
High performance hydrodynamic bearing fans (FDB) are designed to take advantage of the impact of oil absorption effects. They are extremely reliable and generate much less noise and heat during operation than ball bearing fans. Lubrication of the bearing surface reduces friction and vibration, which also reduces the fan's overall power consumption. With smoother, quieter rotation and quality construction, this highly reliable technology also increases the life of the fan.
As the fan shaft rotates, high-pressure oil spreads along the grooves in the bearing sleeve to create a thin layer of lubrication on the ball bearing. As the speed increases, so does the dynamic pressure of the oil. The fan shaft then lifts off the bearing to rotate effortlessly. The chevron shape of the grooves ensures that the lubricant is channelled effectively and thus prevents leakage.
Seasonic 's vast experience in developing the most efficient and quietest power supplies on the market has been translated into the development of Hybrid Mode; a state-of-the-art fan control that allows users to keep noise levels as low as possible.
The latest Seasonic platform keeps output voltages within a very tight margin with less than 0.5% variation under load. This impressive performance and electrical stability makes this power supply the ideal choice for all high-performance machines. In addition, the Seasonic FOCUS series is designed with a reduced acoustic signature to reduce operating noise.
Seasonic 's FOCUS PX Platinum series achieves 80PLUS Platinum certification with an efficiency of 92% at 50% system load.
Seasonic's ongoing commitment to the development of quality analog power supplies has resulted in ripple levels well below the average industry standard of 20mV. Seasonic engineers have implemented a new internal design where, instead of cables, the backplane and PCB (Printed Circuit Board) are connected by a copper plate. This advance not only reduces the chance of production errors during the manual manufacturing phases but also improves the quality of the output voltages.
Select your criteria
General information |
Product name |
Seasonic FOCUS PX 550 Platinum |
Brand |
Seasonic | |
Model |
FOCUS-PX-550 | |
Power and Efficiency |
Power |
550 W |
80 PLUS certification |
Yes | |
80 PLUS certification |
80 PLUS Platinum | |
Connectivity |
Modular |
Yes |
Modularity |
100% modular | |
Power connector(s) |
2 X +12V (Power supply P8 - 2 x P4) | |
| 8 X Serial ATA power supply | ||
| 1 X ATX 24 Pin | ||
| 1 X Molex Floppy Disk 4 Pin Female | ||
| 3 X Molex (4 Pin) Female | ||
| 2 X PCI Express 6 + 2 Pin | ||
Configurator |
PSU-CM compatibility |
+12V P4 |
| +12V P4 and +12V P4 | ||
| +12V P8 | ||
| +12V P8 and +12V P4 | ||
| +12V P8 and +12V P8 | ||
Cooling |
Fan size |
1 X 120mm |
Silent |
Yes | |
Power supply type (PC) |
Active | |
Design |
Power format |
ATX/EPS |
Power supply standard |
EPS12V | |
| ATX12V | ||
ATX 3.0 |
No | |
Multi-GPU |
SLI | |
| CrossFireX | ||
Typical use |
Desktop computer | |
Physical characteristics |
Color |
Black |
LED RGB |
No | |
Height |
86 mm | |
Width |
150 mm | |
Length |
140 mm | |
Warranties |
Commercial warranty |
Seller 3 years |
Legal warranty |
See terms & conditions |
See all Seasonic products
Product referenced on 3 Jun 2019
The pluses :
- Almost permanent fanless mode (silence)
- Highly practical cable modularity
- Large selection of SATA cables
- Clean, reliable and solid hardware feeling
Minus :
- Heavy to handle
- The ribbon cables are not easy to store neatly in the case
- Compare your needs with the same model stamped "LDLC GT-550P Quality Select 80PLUS Platinum" which has fewer cables
Very good reception on the phone and appropriate advice for this material.
I will occasionally make your services known.
Thanks again for your advice.
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