Is anything not checked?

Phanteks doesn't publish a height or thickness limit for the XT Pro, so those aren't checked.

Where do these numbers come from?

Phanteks'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.

Every card in the XT Pro

Will it fit

Does the NVIDIA GeForce RTX 5090 Founders Edition fit in the Phanteks XT Pro?

Fits

Yes. The NVIDIA GeForce RTX 5090 Founders Edition fits the Phanteks XT Pro with 111 mm of length to spare.

Length304 of 415 mm111 mm spare

Height137 mmNot published

Thickness2 slotsNot published

Exact measurements

Size	NVIDIA	XT Pro	Room
Length	304 mm	415 mm	111 mm spare
Height	137 mm	—	Not published
Thickness	2 slots	—	Not published

Phanteks's published spec

Questions

Does the NVIDIA GeForce RTX 5090 Founders Edition fit in the Phanteks XT Pro?: Yes. The NVIDIA GeForce RTX 5090 Founders Edition fits the Phanteks XT Pro with 111 mm of length to spare. Length 304 of 415 mm, height 137 mm (no published limit), thickness 2 slots (no published limit).
Is anything not checked?: Phanteks doesn't publish a height or thickness limit for the XT Pro, so those aren't checked.
Where do these numbers come from?: Phanteks'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: Phanteks’s XT Pro specifications, checked October 24, 2026. Phanteks lists a 415 mm length limit; no height or thickness limit.
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.

This card in other mid-towers

The card’s size, and all 25 cases

Other RTX 5090 cards in the XT Pro

Check another pair with the fit checker.

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