NZXT H3 Flow Black
NZXT H3 Flow Black
The NZXT H3 Flow Black computer case provides a reliable foundation for building mATX gaming rigs that require intensive heat dissipation. Its design uses finely perforated panels on the front, top, and sides, ensuring a continuous supply of cool air to all critical components inside the system. Despite its more compact dimensions, the Midi Tower accommodates powerful graphics cards and tall CPU coolers. The internal layout supports modern motherboards with rear-side connectors, which simplifies cable management and contributes to the clean look of the entire build.
Midi Tower
Case size
170mm
Max. CPU cooler height
377mm
Maximum graphics card length
1×
Number of included fans
7×
Total number of fan positions
Key features of the NZXT H3 Flow Black computer case
- Support for rear-connector motherboards eliminates visible cabling
- Finely perforated panels filter dust and improve airflow
- Ample interior space for long graphics cards without front fans
- Pre-installed rear F120Q fan immediately exhausts heat
- Front panel includes a fast USB-C 3.2 Gen 2x2 port for data transfer
- PSU shroud supports two fans for cooling the graphics card
Sturdy construction and minimalist design
The case is built from high-quality SGCC steel, which gives the entire chassis the necessary rigidity and durability. The robust frame protects internal components and eliminates unwanted vibrations from fans or hard drives. The materials and precision craftsmanship enhance the overall lifespan and stability of your build. The black finish is complemented by a clear tempered glass side panel, offering a view into the computer's interior, enabling visual hardware checks and showcasing your installed components.
Optimised airflow and cooling
Airflow is optimised by a fine perforated mesh on all key air-intake surfaces. The bottom section includes a specially ventilated PSU shroud, which supports air intake from below directly to the graphics card. This natural circulation system prevents heat build-up around critical components. The internal layout offers positions for a total of seven fans, allowing you to create powerful airflow across the entire case. One rear 120mm F120Q fan is included.
Liquid cooling support and space for graphics cards
Příznivci kapalinového chlazení ocení podporu instalace radiátorů na přední i vrchní stranu, kdy přední panel pojme radiátor o velikosti až 280 mm a horní strana nabízí prostor 240mm výměníku. Tato flexibilita dovoluje nasazení výkonných AIO chladičů procesoru. Navzdory menšímu formátu mATX pojme šasi grafické karty o délce až 377 mm bez osazení předních ventilátorů a s instalovaným předním radiátorem a ventilátory zůstává prostor kartám do 317 mm, přičemž dostatečná šířka skříně umožňuje instalaci i masivních grafických karet.
Compatibility, storage, and easy maintenance
The case supports mATX and mITX motherboards, including variants with rear-side connectors, which makes wiring easier and contributes to a clean cable layout. The storage space includes combined bays for 3.5" and 2.5" drives with sufficient capacity for your system and data. The top control panel offers USB-C (USB 3.2 Gen 2x2) and USB-A for fast device connection, while tool-free panel access and integrated cable management features simplify both assembly and maintenance.
Motherboard formats
- mATX (Micro ATX)
- mITX (Mini ITX)
Fans
- Top fan size: 2×120mm, 2×140mm
- Rear fan size: 1×120mm
- Front fan size: 2×120mm, 2×140mm
- Side fan size: 2×120mm
Ports
- USB 3.2 Type-A
- USB 3.2 Gen 2x2 Type-C
Specifications
Usage and size
Colour
Internal structure
External structure
PSU
Cooling system
Backlight
Material
Dimensions
NZXT Europe GmnH, Ammerthalstrasse 32, 85551 Kircheim Bei , Munchen, Germany [email protected]
Specifications can be changed without notice. Images are for illustrative purposes only.
