For decision-makers building small, the ITX gaming case feature grid lays out what each chassis accepts: GPU length, cooler support, PSU form factor, and airflow. In ITX, the grid is not optional, getting one clearance wrong means a build that physically will not close.
Quick Answer
On a feature grid, ITX gaming cases vary by GPU clearance (typically 320-360mm), cooler support (low-profile air to 240mm AIO), PSU form factor (SFX or SFX-L), and airflow design, typically R1,500 to R3,500 at Evetech. For a confident small build, choose the case whose grid matches your exact GPU, cooler, and PSU, since ITX has no margin for an approximate fit.
The grid rows that decide an ITX case
Four rows are non-negotiable. GPU length: confirm the case accepts your card's exact length, compact cases cap around 320-335mm. Cooler support: whether a 240mm AIO or only a low-profile air cooler fits. PSU: SFX or SFX-L, almost never standard ATX. Airflow: mesh panels and a clear intake-to-exhaust path matter enormously in small volumes. Tick all four against your parts list and the build is guaranteed to fit.
Speccing a confident ITX build
Build the parts list first, then filter ITX cases by the grid. A mesh case rated for your GPU length, with 240mm AIO support and an SFX-L PSU mount, gives a cool, quiet small build. For a Ryzen 7 9800X3D and a compact RTX 5070, this combination fits a tidy box with good thermals. Route cables carefully and use the case's airflow design as intended. The grid turns ITX from a gamble into a predictable, repeatable build.
ITX clearance grid as a checklist, GPU length, cooler height, PSU form factor, tick all three against your parts before ordering, with no exceptions.
FAQ
How do I choose an ITX gaming case?
Filter by the grid: GPU length, cooler support, PSU form factor, and airflow, matched to your exact parts. ITX has no margin, so every clearance must check out before ordering.
What is the most common ITX build mistake?
A GPU that is too long for the case, since compact ITX cases cap around 320-335mm. Always confirm the card's exact length against the case spec to avoid it.
Can an ITX case cool a high-end build?
Yes, a mesh ITX case with a 240mm AIO and a clear airflow path keeps a Ryzen 7 9800X3D and a compact GPU cool and quiet. Airflow design is the key spec.
Use the GPU, cooler, and PSU rows as a checklist, then pick the ITX case that matches your parts, at Evetech.