Vertical GPU Mounting: Compatibility, Riser Spec and Limits

A vertically mounted graphics card beside a standard horizontal mount in an NZXT case

Short answer: The NZXT Vertical GPU Mounting Kit fits most full-size ATX cases released since 2022, starting with the updated H5 and H7 series. It does not fit older cases like the H510 or H710. The riser is PCIe Gen 4.0 x16, it takes cards up to 3 slots wide, and it supports one card only, so you lose your other expansion slots.

Mounting the graphics card vertically is the fastest way to change how a build looks, since it turns the card from an edge-on shape into the centrepiece. There are three real constraints to check before you buy, and one of them catches people out because it depends on when the kit itself was manufactured.

Which NZXT cases are compatible

The kit works with most full-size ATX cases from 2022 onwards. Older models such as the H510 and H710 are not compatible.

Case series	Models	Note
H9 Flow series	H9 Flow, H9 Flow RGB, H9 Flow RGB+	Kit needs date code 2024 or newer
H7 Flow series	H7 Flow, H7 Flow RGB	Kit needs date code 2024 or newer
H6 Flow series	H6 Flow, H6 Flow RGB	Kit needs date code 2024 or newer
H5 Flow series	H5 Flow, H5 Flow RGB	Kit needs date code 2024 or newer
H9 series (2023)	H9 Flow, H9 Elite	Compatible
H7 series (2022/2023)	H7, H7 Flow, H7 Flow RGB, H7 Elite	Compatible
H5 series (2022/2023)	H5 Flow, H5 Flow RGB, H5 Elite	Compatible

The date code catch

This is the one that surprises people. Some earlier Vertical GPU Mounting Kits made during 2022 and 2023 do not fit correctly in the newer cases, because of manufacturing tolerances on those early runs. The tooling was updated in early 2024 to fix it.

So if you are pairing a kit with one of the newer Flow cases, you need a kit made in 2024 or later.

How to read the date code

The date code is in the kit's serial number. Start at the third digit and read up to the N. The first two of those digits are the year, and what follows before the N is the month.

NZXT Vertical GPU Mounting Kit serial number with the date code digits highlighted — Read from the third digit up to the N: year first, then month.

So a code of 224 means April 2022. Anything starting 24 or later is from the updated tooling.

Riser cable specification

The riser cable included with the kit, and the standalone NZXT PCIe Riser Cable, are PCIe Gen 4.0 x16.

It is backwards compatible with earlier PCIe generations, running at the speed of whatever slot it is plugged into. It also physically works in a PCIe Gen 5 x16 slot, but it will run at Gen 4.0 x16 speeds rather than Gen 5.

For gaming this is rarely a practical problem, since current cards do not saturate a Gen 4 x16 link. It is worth knowing if you are buying specifically to run a Gen 5 card at full link speed.

Two hard limits

Card thickness: 3 slots maximum

The kit supports standard graphics cards up to 3 slots wide. Cards thicker than that are not recommended. Some current flagship cards exceed this, so measure before you order.

One card, and one card only

Because of how the bracket mounts in the case, you cannot use the Vertical GPU Mounting Kit alongside other expansion cards. No capture card, no Wi-Fi or Bluetooth adapter, no sound card. The kit supports a single connected device.

If you rely on an add-in card for anything, this is the constraint that decides it for you.

Using it in a non-NZXT case

It may work, depending on how the case is built. The features that matter:

At least 7 horizontally mounted expansion slots
No dividers between the expansion slots
An internal flat surface for the included adjustable foot, such as a power supply shroud. Not strictly required, but without it the bracket can flex or move

There is no complete list of compatible third-party cases, so this is a judgement call against your specific case.

A thermal note worth making

Mounting a card vertically moves its intake much closer to the side panel. On cases with a solid or tempered glass side, that can restrict airflow to the card and raise temperatures. The Flow series cases are built around airflow, which is part of why they are the supported ones. If you notice higher GPU temperatures after going vertical, that is the mechanism, and it is worth checking clearance between the card and the panel.

Frequently asked questions

Does vertical mounting hurt GPU temperatures?

It can, because the card sits closer to the side panel and has less room to breathe. How much depends on the case and the gap. Watch your temperatures under load after installing.

Will the kit fit my H510 or H710?

No. The kit is not compatible with those older models. Compatibility starts with the updated H5 and H7 series from 2022.

Is the riser PCIe 5.0?

No, it is PCIe Gen 4.0 x16. It works in a Gen 5 slot but runs at Gen 4 speeds.

Can I use a capture card as well as a vertical GPU?

No. The kit occupies the expansion slot area in a way that rules out any second card.

How do I know if my kit is a 2024 or newer version?

Read the date code from the serial number, starting at the third digit through to the N. The first two are the year. A code beginning 24 or higher is from the updated tooling.