Exact GPU / case compatibility

Does NVIDIA GeForce RTX 5090 Founders Edition fit in Lian Li A3-mATX?

Fails the current FitMyPC.net dimensional check. height/cable envelope exceeds the stored case envelope by 8mm.

This page checks the exact GPU against the selected case with no front radiator installed. Use the interactive calculator to add your cooling hardware.

Open this exact build in FitMyPC.net GPU details Case details

Compatibility calculation

Check	Available	Required	Result	Data confidence
GPU length	415mm case limit	304mm GPU	PASS · 111mm	Manufacturer verified
Height + power cable	165mm case envelope	173mm (137+36)	FAIL · -8mm	FitMyPC.net estimate
Installation envelope	70mm case envelope	61mm NVIDIA case-clearance envelope	PASS · 9mm	FitMyPC.net estimate

Some case clearance fields used by this result are estimates, so treat a pass as a likely fit rather than a manufacturer guarantee. A front radiator can reduce available GPU length and change this answer.

NVIDIA GeForce RTX 5090 Founders Edition manufacturer data

NVIDIA card size: 304mm long × 137mm high, 2-slot. FitMyPC uses NVIDIA’s 61mm case-clearance envelope for the installation check. Power connector: 12V-2x6.

Manufacturer source checked

Verified fields: length, height, thickness, connector, cableAllowance, sffReady

NVIDIA lists the Founders Edition card at 304mm long, 137mm high and 2-slot, while its case guidance calls for a 304×137×61mm (3-slot) clearance envelope and 36mm additional power-cable space.

Official manufacturer source ↗

Checked 2026-08-29

Lian Li A3-mATX manufacturer data

GPU length limit stored by FitMyPC.net: 415mm. Side-panel and thickness envelopes are displayed separately because manufacturers do not publish these consistently.

Manufacturer source checked

Verified fields: maxGpuLength, manufacturerGpuSlots

Lian Li specifies up to 415mm GPU length and support for up to a 4-slot GPU, subject to PSU/fan/radiator layout.

Official manufacturer source ↗

Checked 2026-08-29

What can change the result?

Front radiator/fan thickness, vertical mounting, drive cages, brackets, connector orientation, motherboard layout and product revisions can affect real-world fit.