well advised
the 1st power supply didn't work, so we returned it. The second works well. Good advice before the sale and good follow-up with the customer service. I recommend LDLC.
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 750 Platinum |
Brand |
Seasonic | |
Model |
FOCUS-PX-750 | |
Power and Efficiency |
Power |
750 W |
80 PLUS certification |
Yes | |
80 PLUS / Cybenetics 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 | ||
| 4 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 2 years
|
Legal warranty |
See terms & conditions
|
See all Seasonic products
Product referenced on 3 Jun 2019
the 1st power supply didn't work, so we returned it. The second works well. Good advice before the sale and good follow-up with the customer service. I recommend LDLC.
Very good quality power supply, with enough cables for a complex PC (lots of disks, large graphics card).
Initially I'd chosen a Corsair power supply but it was too long for my case (Fractal Design Core 500) and it turns out that my new case (Fractal Design Pop Air) wouldn't have had enough space. The Seasonic power supply, on the other hand, has more reasonable dimensions which should fit all cases.
I was a bit worried that 850W wouldn't be enough to power a radeon 7900XTX and a ryzen 5800X3D but after two weeks of intensive testing it seems to be holding up!
I've been using it practically every day for 4 years, and I have no regrets.
Very quiet, cables a little too rigid (but at the same time you don't change their position too often)
i7 8086 OC + 7800XT + a few disks and fans: no issues at all
I would recommend
Silent and economical power supply (40W measured when the computer is at rest), with removable cables, which limits the mess in the tower. The only drawback is that all the wires are black, which is good for aesthetics, but could be a limiting factor if you need to do some fiddling later on (a PC power supply provides several different voltages and the colours make it possible to identify them)...
I couldn't finish plugging it in because I have a doubt about the CPU connector.
The manual is useless and it's not even the same model in pictures, same on the seasonic website.
The manual is useless and it's not even the same model in the pictures, the same on the seasonic website, on the power supply there are several connectors with the same name, just an extra 1 on some of them, so which one to plug in is a mystery.
I have a 6 pin connector on the board but only 4 pin cables or 2 x 4.
So I don't know yet.
My previous Seasonic power supply is still performing well in my old configuration.
I appreciate the silence and modularity of this power supply
Quiet as usual with Seasonic easy to install cables and boxes well separated
Perfect, very good material. It was just what I wanted. I was very pleased with the service and the quality of the product.
I don't use it in hybrid mode (my camera is not optimal for this function), but it is totally silent.
Power supply that meets my expectations (650W). Very quiet. Completely modular, impeccable, only the necessary cables are connected. Seasonic is well known. To see in time for its silence and its reliability. I recommend it.
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