If youre in search of a small and compact ATX case then youve come to the right place.
In this post, we will cover the best small ATX cases that optimize space for compact builds.
What is the best small ATX case?
Behind the mesh grill are two (of three) included RGB LED fans.
Stripping the X2 down to its fame is relatively easy.
The front panel, however, removes with a bit of a pull and then snaps back into place.
Once inside, theres room for ATX motherboards, 305mm graphic cards, and 165mm CPU coolers.
Additionally, two 2.5 SSDs can mount on the top of the power supply shroud.
Unfortunately, one downside though, is that the front panel design blocks off the P.S shrouds airflow.
As a result, it can get quite toasty in there.
All in all, those looking to spend the bare minimum will like this small ATX case.
To cover the perforated sides of the chassis, the Q500L comes with three magnetic dust filters.
These have a geometric pattern that creates a unique aesthetic.
An edge-to-edge acrylic side panel on the side of the chassis provides a full clear view of your hardware.
Each corner has a thumbscrew to hold it in place.
Fortunately, the thumbscrews are rubberized to protect against marks from over-tightening.
Unusually, you will also notice that the I/O port is on the side of the case.
This is because you could position the Q500L upright or flat depending on your preference.
Additionally, theres room for multiple 120mm fans and rads going all around the edge of the chassis.
You also get four spots to mount drives behind the motherboard tray.
Overall, its a top modular chassis for a compact budget build.
The result is a compact yet breathable 37-liter compartment.
As it’s possible for you to see, this particular model comes with a tempered glass side.
For easy access, this is held on by four corner thumbscrews.
With the side panels removed, its on to mounting your hardware.
The main chamber can support ATX-size motherboards, 347mm graphics cards, and 165mm CPU coolers.
Besides this, theres room for two SSDs side-by-side on top of the full-length power supply shroud.
To cool your components, the R1 has a total of six fan mounts for 120mm/ 140mm fans.
All in all, its another attractive small ATX case on a budget.
As you’re free to see, the tint is quite dark.
Therefore, its preferential for those wanting to hide their internals rather than display them through the side.
Having a solid front panel and a large glass side window makes the THETIS more suitable for liquid cooling.
The roof of the case has a ventilated mesh top panel and clearance to mount a 240mm radiator.
Additionally, theres room for one 120mm floor fan, plus a 120mm exhaust.
Overall, the THETIS is a well-built, compact ATX case that has a super small volume.
As an upgraded version of the P300A, it integrates a new full mesh front panel.
The ultra-fine steel mesh not only provides the best possible temperatures but also prevents dust from entering the system.
Apart from the upgraded front panel, the P360A closely resembles its predecessor.
It has the same full-length P.S.
shroud in the bottom of the case.
Moreover, flush above that is the same tempered glass side window.
One minor difference is that this now removes via thumbscrews at the rear.
Youll be glad to know that the chassis includes a pre-installed 120mm rear fan.
Besides this, theres room for two 120mm fans in the front and top.
These provide easy-access storage for two 3.5 drives.
Additionally, for SSDs, its possible to mount two 2.5 drives behind the motherboard tray.
Overall, the P360A stands out for its amazing airflow, value, and quality.
It comes equipped with a perforated front grill and three pre-installed SP120 RGB PRO fans.
Additionally, the deal includes a very useful Lightning Node Core RGB controller.
Made from solid steel, the 220T offers fantastic resilience and durability.
The chassis is incredibly rugged and leaves no concern over damaging the front grill.
The interior provides room for 12 x 9 motherboards, 300mm GPUs, and 160mm CPU coolers.
This can house 180mm PSUs, plus a removable drive cage for two 3.5 HDDs.
Considering the 220T is designed for air intake, the radiator support in the case is also pretty good.
Behind the three pre-installed case fans, theres clearance to install a 360mm rad.
Lastly, on top is the I/O panel.
This has two USB 3.1 key in-A ports, a 3.5mm combo jack, and your power/ reset buttons.
Since its original release, youll be glad to know that it comes with many updated features.
For easy access, a single thumbscrew holds the window in position.
Furthermore, a strip of perforations line the length of the steel side panels for adequate ventilation.
The main chamber supports 12 x 9.6 motherboards, 165mm CPU coolers, and 381mm graphics cards.
For your GPU, there are seven standard expansion slots, plus two more for vertical mount.
Additionally, on the floor of the chassis is a full-length P.S.
shroud that can house ATX PSUs.
Impressively, the H510i includes two preinstalled Aer F120 fans with the deal.
As a result, youll only need to install one more fan in the roof to max it out.
The HDDs slot into a removable drive cage that lives in the front of the power supply shroud.
Whereas the SSDs mount vertically on a bracket behind the motherboard tray.
Overall, the H510i is a clean and minimal case that comes with everything you need.
It features a large honeycomb front mesh panel and comes equipped with three pre-installed fans.
Two of these are 200mm ARGB intake fans, which create an awesome dazzling effect through the front mesh.
On the side of the case is a 4mm thick tempered glass panel.
This removes by unscrewing two thumbscrews at the rear and then sliding it back with your hands.
Once inside, theres room for up to e-ATX motherboards, 370mm graphics cards, and 166mm coolers.
Apart from this, the interior is relatively compact with just a few grommets for capable management.
The rear panel has seven horizontal expansion slots but no vertical slots.
A full-length power supply shroud lives in the bottom of the main chamber.
This can house a sliding drive cage, plus 210mm power supplies.
For storage, 2 x 3.5 HDDs or 1 x 2.5 SSDs can mount in the HDD cage.
Additionally, two more SSDs can secure behind the motherboard tray.
The 215s fan support is particularly impressive.
As a result, you could also push air up through the chassis.
Finally, the I/O panel can be found on the top.
This has two USB 3.0 ports, an audio jack, and three control buttons.
The control buttons are for your power, reset, and LED lighting modes.
This particular version of the case features a solid steel front and smoke-tint tempered glass panels.
However, its also available to buy in Airflow and RGB variations.
Aesthetically, the 4000D flaunts a clean and modern look with a fairly minimalistic style.
Apart from the small Corsair logo at the bottom of the front panel, theres very little noticeable branding.
We also like the distinctive two-tone colors that separate the front panel from the ventilation shroud.
On the side of the case is a large tempered glass window for admiring your internals.
Much like the front panel, this is held in place by tool-less clips.
Thanks to the two vertical expansion slots, its possible to mount your GPU vertically.
Unfortunately, the case does not include a riser cable so you would have to buy one separately.
For storage, theres a decent amount of capacity room for both SSDs and HDDs.
A total of four SSDs can mount behind the motherboard tray and on the power supply shroud.
In terms of airflow, the spacious interior can accommodate up to six 120mm or four 140mm cooling fans.
This includes three 120mm fans in the front/ top and one exhaust at the rear.
Youll be glad to know that the deal also comes pre-installed with two 120mm AirGuide anti-vortex fans.
Whats great about this case is that its so user-friendly.
The majority of the panels use tool-less latches that quick release with a bit of a jerk.
With the panels removed, its on to the build.
Additionally, there are seven bridgeless expansions slots at the rear and some grommets for routing cables.
To get you semi-fitted out, we especially like that the deal includes two Dynamic X2 GP-12 stock fans.
One of these is pre-installed in the front and the other is in the rear.
This can store a 165mm PSU with the removable drive cage or a 200mm without.
The drive cage can fit two 3.5 HDDs.
Additionally, two SSDs can mount on the back of the motherboard tray.
Overall, the Define 7 Compact is a quiet and understated small ATX case.
Surprisingly, the interior is also quite versatile featuring several configuration options.
One of these configuration options includes building with either an ATX or an SFX power supply.
Both sizes can mount in the top-rear of the case with cables exiting out the rear.
An ATX PSU in the same position can fit a 48mm cooler.
Unfortunately, though, this is quite limiting for anybody requiring more clearance.
Another option, however, would be to mount the SFX PSU in the roof of the case.
Due to blocking the top half of the front panel, this is the preferred method for liquid cooling.
Aesthetically, the Cerberus has a minimal design with an X-shape front panel.
This particular version of the case comes equipped with a ventilated side panel and a carry handle.
Made of high-gauge aluminum, both panels have a powder-coated finish, which has a lovely texture to touch.
Overall, if youre searching for a highly customizable compact ATX case, this is a great choice.
Of course, those will come at an additional cost.
Apart from style and breathability, whats great about the S2 is that its both modular and very user-friendly.
The majority of panels use bolt-free latches that quick release with a bit of a tug.
This includes a large tempered glass side panel, the front panel, as well as a removable top.
With the chassis stripped down, the S2 is a breeze to access and assemble.
Additionally, there are seven bridgeless expansion slots at the rear but no vertical slots.
At the bottom of the case is a full-length power supply shroud with a two-part removable cover.
This can house a 200mm PSU or a 165mm with the HDD cage and front fan.
On top of the power supply shroud, its possible to mount two 2.5 SSDs via removable brackets.
Additionally, two more can install behind the motherboard tray.
In terms of fan support, the chassis can accommodate up to seven 120mm or four 140mm fans.
A nice bonus is that the S2 Compact comes equipped with three pre-installed, quiet-operation Dynamic X2 fans.
Two of these are 140mm intake fans and one is a 120mm exhaust.
Much like the original O11D, theres a reason why this case is rated so highly.
For drive space, two 2.5 SSDs can fix on the back of the removable sidebar.
Conversely, in the front chamber, theres room for multiple motherboard configurations.
Of course, larger motherboards will limit the amount of radiator space inside.
Alternatively, an ATX configuration has no top radiator space.
In this particular setup, its easily the best small ATX case around!
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What is the smallest ATX case?
We hope you found a small ATX case for compact builds on this list.
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