Cooler Master has a category of products with the name “Silencio” in it. As the name suggests, it focuses on silence. Today, we look at the brand new Silencio S400 – Cooler Master’s latest addition to the Silencio lineup of PC cases.

The Silencio S400 is an mATX case and comes with some swappable parts out of the box. You can opt for silence or go for aesthetics and airflow. Watch the video to know what we mean by that.

The Cooler Master Silencio S400 is actually pretty interesting here. It has a sleek matte black look with no frills or RGB lighting.

Starting from the front, it has a sleek black look. That front panel is actually a hinged panel, revealing the removable front fan filter and surprisingly, an ODD bay. This hinged panel opens up on the left and swivels to the right by default, but you can flip it around through some screws.

Cooler Master Silencio S400

Looking at the I/O panel at the top, we have:

  • Cooler Master logo power button
  • Reset button with HDD activity light
  • 2x USB 3.0 ports (we know this because it has 5 pins instead of 4)
  • Combo audio jack
  • Full-sized SD card reader

Cooler Master Silencio S400

Thank you so much for including a full-sized SD card reader in a PC case. We don’t see much of this in the market – and I’m really glad Cooler Master included it in this case.

Then comes the top panel for cooling. Inside the box itself, Cooler Master included two top panels for you too choose from. You can opt for airflow by using a magnetic fan filter, or go silent with a padded panel. Both the magnetic fan filter and padded panel snaps into place nicely.

Cooler Master Silencio S400

There is also extra spacing between the top of the case and also the motherboard mounting area, so that you can mount your radiator at the top. Pretty common design on cases these days.

Before we open up the side panel, the Cooler Master Silencio S400 also comes with another tempered glass side panel inside the box itself. It’s up to you if you want silence or aesthetics. The default metal side panel is padded with noise-dampening material, whereby the tempered glass side panel does not have any padding.

Cooler Master Silencio S400

Inside the case, it’s pretty spacious too. There are rubber grommets around the cutouts and there are a total of two 2.5-inch storage disks on the PSU shroud itself.

Behind the motherboard tray, you get two more 2.5-inch storage disk mounts and a total of 3x 3.5-inch HDD disk mounts. Two 3.5-inch hard disks can be mounted via the included rails but the last one can be screwed on top of the HDD cage itself. Smart.

Cooler Master Silencio S400

Also, the HDD cage can be repositioned closer or farther away from the power supply. This gives modularity in a sense that you can have more slack for your power supply cables, or to use a thicker radiator at the front of the case.

Cooler Master Silencio S400

The overall case design is solid and makes a lot of sense. The only part that I think can be improved is the power supply fan filter, which is very easy to remove but excruciatingly frustrating to put it back in. For the price of RM319, the Silencio S400 is a pretty decent case to on but there is still room for improvement – Perhaps use a railed design next time?

Since this is a first look at the Cooler Master Silencio S400, we did not test the noise dampening extensively. Do leave us a comment down below to let us know if you want us to test that as well.


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