Bitfenix Colossus Micro ATX Case Review

  1. Introduction
  2. Packaging and Specification
  3. External Impressions Part 1
  4. External Impressions Part 2
  5. Internal Impressions
  6. Installation Experience
  7. Conclusion

The following system components were used for this case:

Test Setup for:BitFenix Colossus mATX PC Case
MB+ProcessorGigabyte Z97N-WiFi+ Intel Pentium 20th Anniversary G3258
SSDSanDisk Extreme II 240GB+ Kingston V90
Primary OS drive2x WD Red 3TB
Power SupplyCoolermaster G450M
CPU CoolerNoctua NH-U12S Push-pull

Before building the entire system, I wanted to figure how the entire rig needs to be setup.

As said before, the front side of the HDD mount allows you to install three 2.5″ drives and two 3.5″ HDDs on the other side. Do note that if you plan to use the one in the middle, it’s best if you install the SSD first and then the HDDs. BitFenix provides screws and thick washers for the 3.5” HDDs. For both sides of the SSD mounts, one of the sides has a mounting pin where you slide one side of the SSD in and secure the other side of the SSD by installing the screws from the other side of the tray.

There’s no problem when you’ll be installing the cables on the 3.5” HDD, but it will be a tight fit. BitFenix could have kept more space between the plate and the SSD to ensure that the cables can be connected properly.

Inside the case, there’s a removable bracket for the power supply. You’ll need to install that on the power supply and then mount it inside the case.

Once you install the bracket, you need to secure it against the case which is held by couple of pins on one side, and a thumbscrew on the other.


Installation with the mini-ITX board from this point onwards was pretty smooth. Most of the power supply’s cables can be easily hidden towards the side of it. BitFenix provided cable tie loops on top and bottom of the case. After installing the power supply and the motherboard, it’s best if the sidepanel connectors are installed first. For me, it’s convenient because of the miniITX board. With an mATX board, its best if you install all the headers and cables. Once it’s done, install the storage drive tray and you’re done!

There would be some cable clutter because of the SATA drives and the front panel cables. So I’ve removed the HDD plate first.

With the miniITX motherboard, I had a problem to install the bottom right screw and the 4 pin ATX power cable. If you’re using a 120mm type cooler like the Noctua NH-U12S pre-installed, you will end up removed it. An mATX layout would most likely provide you with more space, but if you plan to build this system with a miniITX motherboard, first install the power supply and do the necessary cable management for the ATX cable and the fan headers. Once it’s done, install the bolt thru kit for the CPU cooler, install the screws and the ATX power connector, then install the CPU cooler. This wouldn’t be an issue with a water block.

After doing that, install the SATA cables, then connect the front panel connectors. The headers and USB 3.0 cable is long enough to install it in the manner shown above, but since the front panel audio header on the motherboard is in an awkward position, the cable was short. After doing all the cable work once the HDD plate was installed, I tied the SATA and front panel cables. You can install the graphic card easily before installing the HDD tray. Do note that I’ve installed couple of 3.5” HDDs on the other side, and I’ve used a 158mm tall Noctua NH-U12S Cooler with dual fans tower cooler.

Though having a water cooling setup would have helped a lot, the case allows you to install such a CPU  cooler- hands down. Of course, if you’re not overclocking and you’re running a low-TDP processor but want a better than the stock cooler, you could check out the Noctua L9i. Once you turn it up and press the LED buttons, you have a choice of red/ green/ blue/ breathing light effects or simply switch it off. But the LED strip lights look brilliant!

Once you install fans with LED lights and the top air filter, this is the effect that you’re going to get! bitfenix_colossus_matx_0153

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