Exact GPU / case compatibility

Does ASUS ROG Astral GeForce RTX 5090 fit in Lian Li A3-mATX?

Fails the current FitMyPC dimensional check. height/cable envelope exceeds the stored case envelope by 20.3mm; GPU thickness exceeds the stored case envelope by 6mm.

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 GPU details Case details

Compatibility calculation

Check	Available	Required	Result	Data confidence
GPU length	415mm case limit	357.6mm GPU	PASS · 57.4mm	Manufacturer verified
Height + power cable	165mm case envelope	185.3mm (149.3+36)	FAIL · -20.3mm	FitMyPC estimate
GPU thickness	70mm case envelope	76mm GPU	FAIL · -6mm	FitMyPC 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.

ASUS ROG Astral GeForce RTX 5090 manufacturer data

Dimensions stored by FitMyPC: 357.6 × 149.3 × 76mm. Power connector: 12V-2x6 / 16-pin.

Manufacturer source checked

Verified fields: length, height, thickness, connector

ASUS publishes 357.6×149.3×76mm dimensions.

Official manufacturer source ↗

Checked 2026-08-29

Lian Li A3-mATX manufacturer data

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 Side-panel and thickness envelopes are displayed separately because manufacturers do not publish these consistently.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