Small-form-factor PCs · Greater Chicago

Every card in the A3-mATX

Will it fit

Does the NVIDIA GeForce RTX 5080 Founders Edition fit in the Lian Li A3-mATX?

Fits

Yes. The NVIDIA GeForce RTX 5080 Founders Edition fits the Lian Li A3-mATX with 111 mm of length to spare.

Length304 of 415 mm111 mm spare
Height137 mmNot published
Thickness2 of 4 slots2 slots spare
Exact measurements
SizeNVIDIAA3-mATXRoom
Length304 mm415 mm111 mm spare
Height137 mm—Not published
Thickness2 slots4 slots2 slots spare

Lian Li's published spec

Rather have it built?

We build the RTX 5080 into small PCs by hand, each tested and shipped with its own benchmark results.

Questions

Does the NVIDIA GeForce RTX 5080 Founders Edition fit in the Lian Li A3-mATX?
Yes. The NVIDIA GeForce RTX 5080 Founders Edition fits the Lian Li A3-mATX with 111 mm of length to spare. Length 304 of 415 mm, height 137 mm (no published limit), thickness 2 of 4 slots.
Is anything not checked?
Lian Li doesn't publish a height limit for the A3-mATX, so that isn't checked.
Where do these numbers come from?
Lian Li's published spec; card size from NVIDIA's spec page. Checked October 2026. Makers measure differently and connectors add a few millimetres, so treat a tight result as a reason to measure.

Sources

  • Case: Lian Li’s A3-mATX specifications, checked October 24, 2026. Lian Li lists cards up to 415 mm long and 4 slots thick.
  • Card: NVIDIA’s spec page, checked October 23, 2026. NVIDIA publishes the slot count, not a thickness in millimetres, and asks for room for a 3-slot (61 mm) card for airflow.
  • A 25 mm fan under the card limits it to 61 mm (3 slots); a bottom radiator with fans leaves no room for a card.

Check another pair with the fit checker.

Based on published dimensions, not a guarantee. Check cable, cooler and connector clearance before you buy.