Case / GPU Fit Calculator
Use this calculator to check whether your graphics card, case, front radiator, motherboard size, and CPU cooler height are likely to fit together.
This is one of the easiest mistakes to make when building a PC: the GPU looks perfect on paper, but it is too long, too thick, or blocked by a front radiator.
Want a case compatibility checklist?
Get a quick checklist for GPU length, radiator thickness, CPU cooler height, motherboard form factor, and cable clearance.
Add your email signup form shortcode here.
Case Compatibility / GPU Clearance Calculator
Check GPU length, front radiator clearance, motherboard form factor support, and CPU cooler height before buying.
How to use the Case / GPU Fit Calculator
Enter your case and GPU model names, or manually enter GPU length if you already know it. Then choose whether you are using a front radiator, radiator thickness, motherboard form factor, and CPU cooler height.
What the result means
The calculator checks whether the GPU is likely to fit in the case and whether a front radiator may reduce available clearance. It also checks whether the selected motherboard form factor is reasonable and whether the CPU cooler height is likely to fit.
Common case compatibility mistakes
- Forgetting that a front radiator reduces GPU clearance.
- Only checking GPU length and ignoring GPU thickness.
- Choosing an ATX board for a case that only supports Micro-ATX or Mini-ITX.
- Buying a tall air cooler without checking case cooler height support.
- Forgetting cable bend space near GPU power connectors.
Case / GPU Fit FAQ
How much extra GPU clearance should I leave?
Leaving at least 10–20mm extra clearance is a good idea, especially if you have front fans, a front radiator, or stiff power cables.
Does a front radiator reduce GPU clearance?
Yes. A front radiator plus fans can reduce GPU clearance by 30–60mm depending on radiator and fan thickness.
Can a GPU be too thick for a case?
Yes. Very thick cards can block nearby expansion slots and may be difficult in compact cases, even if the length fits.
Does motherboard size affect case compatibility?
Yes. ATX boards need ATX-compatible cases. Micro-ATX cases usually fit Micro-ATX and Mini-ITX boards, while Mini-ITX cases normally only fit Mini-ITX boards.