This article covers NZXT H9 Flow RGB (2025) デュアルチャンバー RGBファン搭載 ミドルタワー型PCケース ホワイト CM-H92FW-R1 CS9291.

Overview

The NZXT H9 Flow RGB (2025) is a mid-tower PC case that adopts a dual-chamber layout, offering excellent component visibility and airflow. Its white chassis features tempered glass panels on the front and side, creating a pillar-less design that showcases your hardware. Out of the box, it comes with one F420 RGB Core fan and one F120 RGB Core fan, providing vibrant lighting effects immediately. The case supports motherboards from E-ATX (up to 277mm) down to Mini-ITX, including back-connector designs that help keep cables tidy. With support for dual 420mm radiators, up to 459mm GPU length, and 165mm CPU cooler clearance, it can accommodate high-end builds without compromise.

Compatibility Guide

This case is compatible with ATX, E-ATX (up to 277mm wide), Micro-ATX, and Mini-ITX motherboards, including those with rear connectors for cleaner cable management. Power supplies must be ATX form factor and up to 200mm long. CPU cooler height limit is 165mm, and maximum GPU length is 459mm, allowing even the largest graphics cards to fit. Storage options include four plus two additional 2.5-inch drive bays and two 3.5-inch bays. Radiator support is generous: front right up to 420mm, top up to 420mm, bottom up to 360mm, and rear up to 120mm, making it suitable for custom water cooling loops.

Product Info

Released in 2025, the NZXT H9 Flow RGB (2025) sits in the upper-mid-range segment, balancing premium aesthetics with high-end cooling potential. The retail price is approximately ¥24,000 (around $170 USD). It comes with a 2-year warranty through the official Japanese distributor. The case weighs 12.6 kg and is made from SGCC steel and tempered glass. Included are two RGB case fans (one 420mm front and one 120mm rear), but no built-in RGB controller is provided, so you will need to connect them to your motherboard's RGB header or purchase a separate hub.

Best Use Cases

This case is ideal for gamers who want to show off their RGB components, as the dual-chamber design hides cables while the glass panels provide a clear view of the interior. It is also excellent for enthusiasts building custom water-cooling loops, thanks to support for dual 420mm radiators and plenty of space for pumps and reservoirs. Additionally, users who prefer back-connector motherboards will appreciate the clean, cable-free look this case enables, making it a top choice for aesthetic-focused PC builders.

Things to Consider

Potential buyers should note the case's size (315 x 481 x 506 mm) and weight (12.6 kg), which may require adequate desk or floor space and careful handling during assembly. Only two fans are included, but the case supports up to ten fans total, so additional fans will be needed for optimal airflow. When installing 420mm radiators, check thickness compatibility to avoid interference with other components. Lastly, the case does not include a fan hub or RGB controller, so plan your motherboard's RGB header capacity accordingly.