Phanteks Eclipse P400S Case Review


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Phanteks Eclipse P400S Case Overview

In the accessories box, the Eclipse P400S comes with an installation guide, warranty information, a few zip ties, and mounting screws for standard power supplies and storage devices. It also comes with two magnetic dust filters for the top ventilation.

Phanteks Eclipse P400 Accessories

At the front of the case, we have just a smooth, clean finish with a Phanteks branding logo at the very bottom of the case. Dust filtered ventilation holes are present at the top and bottom part of the front panel for airflow.

Phanteks Eclipse P400 Front

The Eclipse P400S comes with a 120mm exhaust fan at the rear of the case. The fan can be mounted further towards the top thanks to the adjustable fan mounts. Unfortunately, the case does not support a 140mm fan at the rear of the case. The power supply mounts at the very bottom and is protected by a dust filter from underneath the case.

Phanteks Eclipse P400 Rear

The main side panel includes a non-tinted window to show off the internal components of the system. Finger prints and dust will show on the surface of the window but can be easily cleaned off with a microfiber cloth. Sound dampening materials are included under the main and opposite side panels to allow the system to run quieter. Captive thumbscrews are present on both side panels, which is something I have been expecting to see for a long time.

Phanteks Eclipse P400 Side

The top of the case features two top ventilation covers to prevent dust from entering the system. They also keep the system running silent due to the sound dampening materials underneath them. The front I/O ports and the power button are located towards the top front of the case. The reset, LED control, and fan speed control buttons are located underneath the top panel towards the front panel ventilation gap.

Phanteks Eclipse P400 Top

The Eclipse P400S stands about an inch off the ground due to the four rubber coated feet. This ensures a firm grip on a smooth surface. The power supply unit is also filtered with an easy to remove dust filter.

Phanteks Eclipse P400 Bottom

Now that we have seen a quick overview of the Eclipse P400S, let’s take a look at the features this case has to offer.


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  1. Muresan Rares

    Hi I have this case but can’t find out how to plug the front 4pin cable that is in your last photo. Can you help me? Thanks!

    1. Olin Coles

      It’s an LED extension cable, for strip lighting.

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