If you are a maniac of silence, then you want each and every component of your PC to be as quiet as possible, although sometimes this is detrimental to thermal performance. However, in the power supply market we can find fanless models (without a fan) but also semi fanless models , which have a fan but it will only work when necessary so that when the equipment is at rest it is as silent as possible. In this regard, below we are going to tell you which are the best fanless and semi fanless power supplies that you can buy.
Relative to semi fanless sources, they are also known as “with hybrid fan”, and you should know that it can work depending on two conditions: the most common is that it remains off and turns on depending on the load of the source (generally from 40%), but it can also be that it works by temperature, increasing its speed progressively (via PWM) as the temperature of the source components increases. In either mode, the result is that they are completely silent sources and that even when under load, they generate a low noise level.
The best fanless power supplies
Let’s start by looking at the best completely fanless power supplies, so their operation will be as quiet as possible regardless of their temperature or load level.
SilverStone NightJar NJ450-SXL
The SilverStone NightJar series is a marvel when it comes to completely fanless power supplies, and in addition to not having a fan and being completely silent, they are totally modular and with enough wiring for almost any PC, since it has models that arrive up to 700 watts of power. Of course, it has all the protections, active PCF and 80 Plus Platinum efficiency certification.
SeaSonic Prime Titanium 600TL Fanless
SeaSonic is one of the most renowned PSU manufacturers, and it will be for a reason. This Prime Titanium model has, as its name suggests, 80 Plus Titanium efficiency certification and of course it is completely modular to facilitate its installation; in addition, it does not have a fan so the noise it emits is practically zero.
The best sources with semi fanless
Now we are going to proceed to see what your best options are if what you are looking for are power supplies with a higher power, with a fan but that it has a hybrid operation, so that it only starts to turn when the source really needs it and not before , thus always keeping the sound level to a minimum. In addition, these fountain models are already equipped with very quiet fans that, even in operation, make practically no noise.
One of the most versatile power supplies on the market out there is Corsair’s HXi series, with digital control, fully modular flat wiring and 80 Plus Platinum efficiency certification so you don’t overspend on your electricity bill. This efficiency also allows the source to generate almost no residual heat, so the fan will rarely have to come into operation, so it is also one of the quietest sources you can find.
ASUS ROG STRIX 850G
ASUS power supplies are well recognized for their efficiency and quality, and this model also has a gaming aesthetic that fits any machine for this purpose. With 80 Plus Gold efficiency certification, modular cabling, hybrid fan and no less than 10 years warranty, despite its price it is a safe bet for any high-end gaming PC.
be quiet! Straight Power 11 Platinum
The German manufacturer be quiet! product design always focuses on providing the lowest possible noise level, and these Straight Power 11 Platinum power supplies are no exception. They have fully modular wiring, Silent Wings 3 fan with semi fanless operation and 80 Plus Platinum efficiency certification. Another safe bet if you are looking for a low sound level on your PC but without giving up all the power of a high-end PC.
Antec VP700P Plus
Not all semi fanless sources have to be of the highest range and therefore very expensive, and proof of this are the Antec VP700P sources that for quite little money provide very quiet operation and with all the guarantees.
SilverStone SST-ST45SF v.3.0 SFX
If what you are looking for is to mount an HTPC or small form factor PC, in the SFX format you also have this semi fanless source from SilverStone, with 100% modular cabling, 80 Plus Bronze efficiency certification and all the protections for your system to work. not only silently, but also with all the guarantees.