IN-WIN B2 Stealth Bomber Mid-Tower Case Review

Our first impressions after taking off the case sides had us running for the spec sheet to verify that this case was designed to accept both ATX and mATX motherboards. Remember the comment about it being shorter than most cases in this range? The internals of this case look extremely tight for an ATX motherboard installation. Part of this first impression is valid as it is not a tall case, mostly though; it’s due to the large cooling tunnel for the video card. We’ll hold off on making judgments until after we’ve installed a full sized motherboard into it but it looks quite tight in there.


This is the culprit; IN-WIN’s “Dual Fan VGA Turbo Cooling System” covers up at least a third of the motherboard tray as well as the HDD bays making the interior look a lot smaller than it actually is.

Tunnels for cooling extra-hot video cards seem to be all the rage these days among case manufacturers. Not to be out done, the B2 offers a truly unique solution; rather than simply forcing air from the case front down the tunnel, IN-WIN uses two 80mm fans to draw fresh air from the side of the case (through the air intake duct) directly onto the video card slots. Depending on the video card’s style of cooling, the B2 offers a further innovation in that the rear fan mount can be rotated 90 degrees allowing that fan to blow air down the length of the video card rather than simply from the top down.

We’ll get a chance to see how well this cooling solution works after we’ve got hardware installed, but once again, IN-WIN has surprised us by including a feature which goes above-and-beyond what we were expecting. Unfortunately, with all this video card cooling CPU cooling may suffer since the natural airflow of the case will be disrupted by the virtual cyclone around the video cards.

The image of the release mechanism for the tunnel (on the right) gives us a good chance to mention the interior colour scheme. Obviously the yellow/green of the rear fan wasn’t just an oversight; somebody consciously chose this scheme. We’ll leave it to the readers decide what they think of it.


Once we drop the plastic tunnel down we can now begin to picture a full sized motherboard fitting into this case. It’s still not a huge amount of room, but certainly not as constricted as we originally thought.

Starting from the right we can see the front 120mm intake fan, a HDD bay designed to hold up to 4 drives, and finally at the rear of the case we can see the tool-less card mounting system.


Zooming in on the motherboard tray for a closer look, we can see that most of the motherboard posts are pre-punched. Normally this would set off a few alarm bells but the quality of metal used on this case appears to have allowed IN-WIN to do it right with sturdy, well defined posts. On the right, the inclusion of a clamp for wire management bodes well for the installation portion of this review. It might seem like a small thing, but with IN-WIN's reputation in system rebuilders' circles, it's a strong indication that they've put some thought into allowing for cable management within this case.


The B2 incorporates a 4 drive HDD bay. Of special note here is the absence of screw holes allowing the drives to be mounted without using IN-WIN's tool-less mounting rails. This is not much of an issue for the Hard Drives, but the main 3 1/2" bays also require the use of the rails so mounting of third party bay controllers which don't follow a standard floppy mounting scheme is not possible.

As you can see, the HDD bay rotates to allow access to the front intake fan. The solid feel of this action is yet another strong indication of the high quality build and design which went into the production of this case.


With the HDD bay rotated, the front intake fan and filter assembly easily slides out to allow for cleaning of the fan filter. This also allows for VERY easy chaging of the front fan if you don't find the stock one for your liking. While we're here, let's talk a little bit about IN-WIN's choice of fans for this build.

Choosing ARX Technology Corp’s CeraDyna series fans for this case was probably quite an easy fit for IN-WIN. ARX may not be household name, but they are well connected within the same “system integrators” circles that IN-WIN frequents and pictured here is their ceramic bearing 120mm FD1212-A3133E. The spec sheet lists it as a 25mm deep, 2100 RPM fan which pushes out 73.70 CFM with a static pressure of 0.12 inch-H2O. Listed at 38 dBA, it’s certainly not the most silent on the market, but it does come with a 3 pin fan connector so noise levels can be controlled by the motherboard. As already mentioned, those whose priorities are noise levels over cooling performance, both the front and back fan mounts will allow for an easy (still tool-less) replacement of these fans with lower RPM 25mm deep ones.

Not pictured here are the 80mm FD1280-A3110E fans used on the video cooling tunnel. These are listed as 25mm deep, 2100 RPM fans which push out 26.20 CFM with a static pressure of .06 inch-H2O and a noise level of 22.60 dBA.