NZXT H9 Flow - Dual-Chamber ATX PC Case - Black

The NZXT H9 Flow is a dual-chamber ATX PC case engineered for builders who want expansive hardware support and maximum airflow without hiding their components. By placing the power supply unit and storage drives in a separate secondary compartment, it frees up the main chamber for uninhibited air circulation and gives your primary hardware room to breathe.

Airflow and component visibility are the core strengths of this enclosure. The chassis combines perforated steel panels with angled front-right fan mounts to pull in cool air efficiently. It comes ready out of the box with four case-version fans: three F140Q fans along the front-right bracket and a single F120Q exhaust fan at the rear. For builders planning custom loops or all-in-one liquid coolers, the frame accommodates up to 420mm radiators on both the top and front-right positions, alongside ample clearance for large graphics cards.

Cable management and presentation are exceptionally well thought out. Wraparound tempered glass panelling gives you an open, panoramic showcase of the interior. To keep that view clean, the chassis features extra-wide routing channels, dedicated tie-down points, and built-in Velcro straps. It also supports back-connecting motherboards like ASUS BTF and MSI Project Zero, allowing you to route connections directly behind the tray for a wire-free presentation.

As for trade-offs, the dual-chamber layout naturally creates a wider case profile that occupies more desk real estate than traditional mid-towers. Additionally, the four included F-series fans use 3-pin DC connectors rather than 4-pin PWM controls, and the specification list does not state the maximum drive cage capacities or total weight.

Verdict: The NZXT H9 Flow is an excellent choice for PC builders putting together high-end, heat-generating systems who prioritize clear hardware visibility and massive radiator support. If you plan to use modern rear-connect motherboards or want ample room for up to ten fans, this case provides a clean and capable foundation.

• Form Factor: Dual-Chamber ATX
• Included Fans: 3x F140Q (CV) 3-pin DC front-right, 1x F120Q (CV) 3-pin DC rear
• Total Fan Support: Up to 10 fans (9x 140mm + 1x 120mm)
• Radiator Compatibility: Up to 420mm (top and front-right)
• Panel Materials: Perforated steel and wraparound tempered glass
• Motherboard Compatibility: Standard ATX and rear-connect (ASUS BTF, MSI Project Zero)
• Color: Black

A great fit if you:

• Plan to build with a back-connecting motherboard like MSI Project Zero or ASUS BTF.
• Want a clear, panoramic view of your motherboard, graphics card, and liquid cooler.
• Need space for large cooling setups, including up to 420mm radiators and ten total fans.
• Prefer having intake and exhaust fans pre-installed right out of the box.

Consider something else if you:

• Have limited desk width and need a slim, space-saving PC enclosure.
• Require pre-installed 4-pin PWM fans rather than standard 3-pin DC models.

What fans come included with this case?
The case includes four pre-installed fans: three F140Q 140mm case-version fans mounted on the front-right and one F120Q 120mm fan mounted in the rear. These are 3-pin DC models.

What is the maximum fan and radiator capacity?
It supports up to ten total fans (nine 140mm fans across the top, bottom, and front-right, plus one 120mm fan in the rear) and fits up to a 420mm radiator on both the top and front-right mounts.

Does this case support rear-connecting motherboards?
Yes, the chassis is back-connect ready and compatible with rear-plug designs such as ASUS BTF and MSI Project Zero.