Is anything not checked?

Jonsbo doesn't publish a height or thickness limit for the Z20, so those aren't checked.

Where do these numbers come from?

Jonsbo'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 Z20

Will it fit

Does the NVIDIA GeForce RTX 5070 Founders Edition fit in the Jonsbo Z20?

Fits

Yes. The NVIDIA GeForce RTX 5070 Founders Edition fits the Jonsbo Z20 with 121 mm of length to spare.

Length242 of 363 mm121 mm spare

Height112 mmNot published

Thickness2 slotsNot published

Exact measurements

Size	NVIDIA	Z20	Room
Length	242 mm	363 mm	121 mm spare
Height	112 mm	—	Not published
Thickness	2 slots	—	Not published

Jonsbo's published spec

Rather have it built?

We build the RTX 5070 into small PCs by hand, each tested and shipped with its own benchmark results.

Questions

Does the NVIDIA GeForce RTX 5070 Founders Edition fit in the Jonsbo Z20?: Yes. The NVIDIA GeForce RTX 5070 Founders Edition fits the Jonsbo Z20 with 121 mm of length to spare. Length 242 of 363 mm, height 112 mm (no published limit), thickness 2 slots (no published limit).
Is anything not checked?: Jonsbo doesn't publish a height or thickness limit for the Z20, so those aren't checked.
Where do these numbers come from?: Jonsbo'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: Jonsbo’s Z20 specifications, checked October 24, 2026. Jonsbo lists cards up to 363 mm long, 'depends on other hardware configurations'.
Card: NVIDIA’s spec page, checked October 23, 2026. NVIDIA publishes the slot count, not a thickness in millimetres.
Jonsbo publishes a length limit only, and says it depends on the rest of the build.

This card in other small cases

The card’s size, and all 25 cases

Other RTX 5070 cards in the Z20

Check another pair with the fit checker.

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