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 Gigabyte'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 Gigabyte GeForce RTX 5070 Windforce OC SFF 12G fit in the Jonsbo Z20?

Fits

Yes. The Gigabyte GeForce RTX 5070 Windforce OC SFF 12G fits the Jonsbo Z20 with 81 mm of length to spare.

Length282 of 363 mm81 mm spare

Height110 mmNot published

Thickness≈2.46 slotsNot published

Exact measurements

Size	Gigabyte	Z20	Room
Length	282 mm	363 mm	81 mm spare
Height	110 mm	—	Not published
Thickness	≈2.46 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 Gigabyte GeForce RTX 5070 Windforce OC SFF 12G fit in the Jonsbo Z20?: Yes. The Gigabyte GeForce RTX 5070 Windforce OC SFF 12G fits the Jonsbo Z20 with 81 mm of length to spare. Length 282 of 363 mm, height 110 mm (no published limit), thickness 2.46 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 Gigabyte'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: Gigabyte’s spec page, checked October 23, 2026.
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.