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 Sapphire'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 Sapphire Pulse Radeon RX 9070 fit in the Jonsbo Z20?

Fits

Yes. The Sapphire Pulse Radeon RX 9070 fits the Jonsbo Z20 with 83 mm of length to spare.

Length280 of 363 mm83 mm spare

Height120.3 mmNot published

Thickness2.5 slotsNot published

Exact measurements

Size	Sapphire	Z20	Room
Length	280 mm	363 mm	83 mm spare
Height	120.3 mm	—	Not published
Thickness	2.5 slots	—	Not published

Jonsbo's published spec

Rather have it built?

We build the RX 9070 into small PCs by hand, each tested and shipped with its own benchmark results.

Respec Mini A2$2,499AMD Ryzen 7 9700X · Fractal Design Terra

Questions

Does the Sapphire Pulse Radeon RX 9070 fit in the Jonsbo Z20?: Yes. The Sapphire Pulse Radeon RX 9070 fits the Jonsbo Z20 with 83 mm of length to spare. Length 280 of 363 mm, height 120.3 mm (no published limit), thickness 2.5 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 Sapphire'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: Sapphire’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 RX 9070 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.