Test System

Assembly

Installing the motherboard is done by traditional means, with the use of the pre-installed spacers and included screws. As the board will be blocked by the PSU, you need to make sure to pre-attach any wires, like the SATA data cables and fan/RGB connectors. Due to the compact size, the Mastercase H100 can only accommodate GPUs of up to 210 mm in length in an air-cooling setup, or 180 mm with liquid cooling in place. While rather short, you luckily have a few good choices out there with current-generation AMD or NVIDIA offerings.


Next, you may install the PSU. To allow for longer units, Cooler Master employs an extension bracket. Just make sure you connect up all the various power cables before securing the unit to make your life as easy as possible. According to the case's specifications, you may install a PSU of up to 210 or 180 mm in length depending, once again, on the cooling setup. You want to make sure any loose cables are securely tied together, especially as the H100 doesn't offer a lot of cable-routing possibilities.


Luckily, you may install a single 3.5" drive to the floor of the case. If you also want to add an SSD, you should do so after installing the motherboard, but before adding anything else, and wire it up right away as well.


Adding up to two SSDs to the plate is quite easy, however, as it can be done outside the confines of the chassis. Simply screw the whole plate into place once the drives have been attached.


With everything installed and connected, you can see that access to the board is essentially non-existent. While this is inconvenient, it is fine as the assembly process itself is pretty painless.

Finished Looks

Thanks to the included RGB controller, you are able to manually switch between five color options alongside some animations. As the fan uses a standard 4-pin connector for the lighting effects, it should be universally compatible with motherboards that offer software control. I feel like Cooler Master has missed an opportunity to use aRGB, but considering none of the other H-Series enclosures offer that type of lightning, I was not really expecting it.


In the front, you can clearly see the 200 mm fan behind the metal mesh, as well as the Cooler Master power button with its white LED framing.


You can also take a peek at the interior through the top of the chassis, but won't see too much from this side anyways. In the rear, everything is where you would expect it to be.


Lifting the Cooler Master Mastercase H100 up essentially tilts it forward 45°, which is perfectly fine for transportation. It actually feels quite comfortable overall, and thanks to the angle, you should never have to worry about the system slipping.