Closer Look: HAF Stacker 915
There are two versions of the Cooler Master HAF Stacker 915 case. Each one accommodates an ATX power supply: the 915F mounts the power supply at the front of the case, underneath the 5.25″ bay, while the 915R mounts the power supply in the rear, above the motherboard. Cooler Master says the 915F prioritizes CPU cooling, with room for large coolers, while the 915R prioritizes GPU cooling.
Both 915 cases are visually similar externally. The image above is the 915F.
This is the 915R that was included as part of the 935. As you can see it doesn’t have a front panel, but a separately-purchased 915R would have the same front panel as the 915F above. An 80mm fan is behind the front grille, below the 5.25″ drive bay.
The interior of the 915R has a standard mini-ITX layout, except that there’s a lot of extra space between the motherboard mounting area at the rear and the drive bays at the front. The power supply mounts above the motherboard, while three removable 2.5″/3.5″ bays occupy the space below the single 5.25″ bay.
The 915F, on the other hand, has a 120mm exhaust fan above the motherboard area and mounts the power supply under the 5.25″ bay. Although there are no removable drive bays, you can mount 2.5″ or 3.5″ drives in three places: on the bottom of the 5.25″ bay, on the middle bottom of the case, and on a riser brace on the middle right side of the case. In the image above, note the slotted holes in each of these areas: rubber-isolated mounting screws attach to the drives which are then slid into these holes.
Cooler Master says the HAF Stacker cases are modular, and they are: for example, you can remove a drive cage from the mid-tower component and mount it in the center of either 915 case. (This would, however, block many graphics cards.) Even the 5.25″ bay in both 915 cases can be unscrewed and removed entirely from the case, which you would need to do to use a 360mm radiator in either side panel.
Let’s take a look at what you can do with the Cooler Master HAF Stacker system in the next section.