Everything appears to be upside-down, Captain
Opening the right-side panel gives us a better look at the plastic cover for the power supply mount and 5.25" drive bay cover. Below the cover, the six openings on the interior wall offer a variety of paths for cable routing. Only four of these holes include rubber grommets. The rolled edges on the two un-grommeted holes at the bottom of the case should prevent shredded cables, though.
Removing the left-side panel reveals a compact space with seven tool-free drive bays. The three vertical 2.5" bays have a bit of space between them to route cables down from the power supply, through the grommets, and out to the main chamber. These bays can also be removed if they aren't needed. The two 3.5" bays and the power supply mount form the ceiling of the main chamber of the case. Large holes in the floor of those drive bays let them serve as additional cable-routing paths if a drive isn't installed. The dual 5.25" drive cage sits in front of the space for power supply cabling.
This side of the case isn't as roomy as we'd like. While the space measures about 0.9" at its widest point, the extra width of the 2.5" drive bays makes them a pinch point. This area also doesn't have many tie-downs for cable management. Builders can remove any unused 2.5" cages to make more room for cables, to be fair, but that's not an appealing option in a case whose room for storage is already limited.
The interior of the 600C seems generally well-thought-out, but a full tower with just two 3.5" drive bays seems restrictive. While it's true that hard drives and SSDs are growing denser by the day, builders carrying over lots of storage devices from older builds won't find a lot of room for them in this big case. Mid-towers like the Fractal Design Define R5 and the Cooler Master MasterCase 5 offer much more flexibility for storage mounting than the 600C does.
Building within the Carbide 600C was straightforward once I became acclimated to the upside-down interior layout. I recommend removing the plastic drive-bay cover while building. Some of the motherboard screws were difficult to access with the bay cover in place. The grommets in the motherboard tray make for easy cable runs to components on the other side of the case. We only ended up with a tiny bit of slack cabling visible through the side-panel window, too.
Cable routing was more difficult on the other side of the motherboard tray. I was forced to partially block one of the 2.5" bays in order to feed the SATA cables and the power connector for the storage drives. Feeding the cords from the power supply partially blocked one of the 3.5" drive bays, too. The extra SATA power connectors from our power supply had to be wedged into one of the 2.5" bays to attach the side panel to the case, which isn't ideal. Builders who plan on using every storage mount inside the 600C will need to do some careful planning before routing cables. I also recommend placing any storage devices in their bays before making any cable runs.
In my finished build, the four inches or so of open space in front of the motherboard stood empty. Builders planning to use liquid cooling should find plenty of space for a 280-mm radiator stack, though. I had one tense moment standing the case upright, since I was worried about our lengthy GeForce GTX 980 Ti graphics card hanging upside-down. The rear panel of the case held the card solidly in place, though. Beyond our minor issues with cable routing, building in the case was easy and enjoyable. Closing the door and seeing my finished build through the large side-panel window left me feeling more fulfilled by the 600C than many cases I've used in the past.
Now that our test system is inside the Carbide Series 600C, let's see whether the inverted layout helps this case keep its cool.