A Look Inside
With the simple press of a button, the respective side panel is released from the top of the case, and can easily be removed. With the side panel out of the way, it is easy to see just how much room there is to work with in the 905.
Starting at the top, we have a solid metal panel that spans the length of the case. This is quite different from most modern cases that typically have some form of ventilation in this location. As we have mentioned previously, InWin went with a bit of a non-traditional cooling setup for this case, so it makes sense that there are no openings here. This also creates a bit of a cavity between the interior of the case and the aluminum exterior, which we found a bit odd, and will touch on shortly.
Taking a look at the motherboard tray, we see a large cutout for CPU cooler installation and access, which thankfully has become pretty standard. Multiple cable management openings are found above, below, and to the side of the motherboard area, though none of them have any type of rubber grommet to improve aesthetics. We really wish InWin would have included some type of solution for this area to make it look cleaner, especially when this is a case that was designed with looks in mind.
At the back of the case we find a single 120mm InWin Sirius Loop ARGB exhaust fan. We have found these to be pretty nice fans, and are much better than many fans you see included with cases. This PWM fan has a ring of ARGB LEDs on each side, so no matter the orientation, you get a great looking lighting effect. Additionally, the Sirius Loop fans can be chained together to provide a synchronized lighting effect. The rubber pads on the corners of the fan work to keep vibrations in check.
The front panel of the case interior is home to two additional 120mm Sirius Loop ARGB fans, which are oriented to provide additional exhaust duties. The front of a case is typically where you will find one or more intake fans, but InWin designed the 905 to pull in outside air from the large opening in the bottom of the case, and exhaust it from the front and rear. In order for the front fans to exhaust air from the case, the addition of the aforementioned perforation on the right side of the case was necessary. These two front fans push air forward into the aluminum front of the case, where it must then turn and exit from the right side.
Unfortunately, this front air channel is also connected to the open cavity at the top of the case, which can then trap warm air and provide it nowhere to go. A simple panel to block the airflow to this upper cavity would probably help the case rid itself of hot air.
One feature we really like with regards to the fans in the 905 are the removable trays that the fans attach to. Both the front and bottom fan locations feature 240mm and 360mm trays, respectively, which makes cable management much easier, especially when dealing with both power and lighting cabling. A single thumbscrew keeps the tray in place once fans have been mounted. Long slots allow for some adjustment with regards to fan placement, so you can line them up to fit your cooling needs.
Just to touch on cooling a bit more, the InWin 905 supports a single 120mm radiator and fan in the rear, and a combination of 120-240mm in the front, with room for radiators up to 360mm at the bottom. This is another place where the removable fan trays are a great addition to the case, as mounting radiators and fans is much easier outside of a case.
Moving to the bottom portion of the case interior we see the 360mm fan tray, which sits above a completely perforated bottom panel. Even without fans installed at the bottom of the case, the 905 provides quite a lot of passive air intake at the bottom of the case.
Making our way to the right side of the case interior, we see that there is quite a bit of room between the motherboard tray and the right side panel. Multiple tie-down locations are provided for cable management, which is really helpful when you add in all of the extra ARGB fan cabling.
Behind the motherboard tray is also where we find the 2.5″ and 3.5″ drive mounting locations. Included with the 905 are two 2.5″ drive trays and a single 3.5″ tray, each removed with a single thumbscrew. The 2.5″ trays have multiple mounting location options, while the 3.5″ drive finds itself at home just below the CPU cooler cutout.
The power supply chamber is wide open and provides a good amount of room for excess cabling, and the wide build of the 905 also provides good clearances for power cables to make their way up from the lower chamber and into the main body of the case.