When comparing Fractal Design Define R6 TG vs Corsair Obsidian 750D Airflow Edition, the Slant community recommends Corsair Obsidian 750D Airflow Edition for most people. In the question“What are the best desktop computer cases under $150?” Corsair Obsidian 750D Airflow Edition is ranked 1st while Fractal Design Define R6 TG is ranked 2nd. The most important reason people chose Corsair Obsidian 750D Airflow Edition is:
If you want build your computer entirely with 2.5" drives and have them be hidden, this case gives more room than most cases. You can store up to 4 drives behind the back panel and free up the space by removing the 3.5" bays.
Specs
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Pros
Pro Easy to build in
This case gives you lots of room to work with. The 3.5” drive panel can be moved back, sacrificing the drive bays, and leaving you with 2 2.5” brackets in the back, where there are some velcro straps and plenty of space for cable management.
Pro Ample space for cooling
If you’re looking to make your case as quiet and cool as possible and the included fans are not doing the job, there's enough space to fit a 420mm radiator at the top, 360mm in the front, 240mm at the bottom, if you’ve moved the 3.5” drive bay panel back.
Pro All air intakes have dust filtration
All 3 possible fan intake spots are covered by dust filters and the top can be completely opened up with a modular panel, that can either be a dust filter or a solid surface, if you don’t plan on using the top fan mounts.
Pro Toolless panel mechanism
Both of the side panels work on a tension mechanism, so you don’t have to unscrew them, they just pop off with some pressure applied. The front panel works on a hinge and the direction of the swing can be changed.
Pro It’s pretty quiet
Front, top and side panels are covered in sound dampening material, helping keep the case quiet. Even at 100% included fan usage the case produces less noise than an average library at around 35dB.
Pro Good ammount of 2.5" drive storage in the back
If you want build your computer entirely with 2.5" drives and have them be hidden, this case gives more room than most cases. You can store up to 4 drives behind the back panel and free up the space by removing the 3.5" bays.
Pro Easy to build in
At the front, there are 2 removable, stackable drive cages with 3 toolless 3.5” drive caddies each. You can also install 2.5” drives in them, but that will require you to screw them on. At other side there are 4 toolless 2.5” drive mounts, lots of space and cutouts with rubber grommets for cable management.
The motherboard cutout is large enough to where you shouldn’t have any issues installing an aftermarket cooler, for which there is 170mm of clearance from the motherboard to the front panel. There’s also enough room for a 4-way graphics card setup with up to 340mm with the drive cage installed and up to 460mm of clearance with it removed.
Pro Lots of room for cooling
This case has plenty of space inside to fit a custom water cooling loop and if that is not enough, there are 2 punch-out holes at the back if you want to set up external cooling. It comes with 3 140mm fans preinstalled out of the box, 2 in the front, 1 in the back and has room for a total of 8 fans. You can fit up to a 360mm radiator at the top, 280mm in the front and 240mm on the bottom, if you remove the 3.5” drive cages.
Pro Compatible with a lot motherboard form factors
In this price range, currently, it’s one of the very few cases that support this many motherboard form factors, such as Mini-ITX, Micro-ATX, ATX, E-ATX, XL-ATX, giving you the room to choose the right motherboard for your needs.
Cons
Con Pretty heavy
The Define R6 comes in pretty heavy at 12.4 kg / 27.3lbs.
Con Tempered glass stains easily
The entire side panel is tempered glass and there's not a lot of room to grab it by, so fingerprints on the glass are very likely to happen every time you want to open the case up, since you also have to apply some pressure to remove the panel.
Con Front panel stains easily
While it might look nice, you probably don’t want to touch the front panel too often, since it picks up fingerprints and is not very easy to clean, as aluminum finishes tend to be.
Con Limited modularity
The front of the case is much wider than the 5.25” bay, which is commonly used for the installation optical drives and fan controllers. There is no hinge or a smaller cut-out for your optical drive, so it ends up looking out of place with the front cover removed, revealing matte black slits on the sides. The drive bay is attached by studs and you would have to use a drill to get it out of the case if you don’t want it there, or need more space for your custom build.
Con Side panels feel outdated
This case was released back in 2013 and while it still keeps up with others in most areas, the side panels don’t seem to be one of them. The panels are not very flimsy, but they still tend to bend and can cause some issues with closing the case. They’re not hinged, there is no rail and it’s not unlikely that you’ll end up having trouble getting all 4 corners of the panel in their place.