Passively cooled computer power supplies, once limited exclusively to systems of the most hardcore enthusiasts that were ready to manually finish off off-the-shelf solutions, have become quite ordinary products with times. Today, many PSU makers think it necessary to have one or two fanless models in their product range.
Of course, you cannot solve the problem of noise completely by simply using a silent PSU because there still remain the central processor, graphics card, mainboard and hard drive. But after the PSU has got silent, it is not a hard task to ensure proper cooling and noise insulation of all these components, too.
You can use a system case with low-speed 120mm fans (it would be unwise to assemble a computer without any active ventilation at all), put rubber noise-absorbing pads on the hard drives, choose a graphics card with passive cooling, and mount a copper CPU cooler with a low-speed fan (or even deploy a liquid-cooling system). In a system assembled with silence in mind, a fan-cooled PSU may become the loudest component, spoiling the result.
So today we offer you a detailed review of two fanless power supplies from FSP Group and Topower. Frankly speaking, only one of them proved to be truly fanless, as you will learn below.