A micro-ATX PC case designed to deliver high airflow for performance-packed builds. NZXT H3 Flow Micro-ATX PC Case simplifies assembly and cooling while keeping a compact desk footprint. Is it the right choice for builders who need full-size GPU support in a smaller chassis?
⚡ At a Glance
- • Airflow: Ultra-fine steel mesh panels and a filtered PSU shroud maximise intake while blocking dust.
- • Best for: Compact-system builders who want strong cooling and room for big graphics cards.
- • Not ideal for: Users who require an ATX-sized motherboard or numerous internal drive bays.
Micro-ATX chassis balances small footprint with room for high-performance components. Front supports up to a 280 mm radiator, top supports 240 mm, and a pre-installed 120 mm rear fan handles exhaust.
Efficient cooling - with ultra-fine steel mesh and filtered PSU shroud
Ultra-fine steel mesh on the panels and PSU shroud allows large volumes of air to pass while trapping dust particles. A pre-installed F120Q (CV) 120 mm rear fan provides direct exhaust to aid overall airflow.
Lower component temperatures under sustained load, and cleaner internals over time thanks to effective dust filtration.
Roomy internal layout in a small footprint - thanks to a space-saving micro-ATX chassis and back-connect motherboard design
The micro-ATX form factor is arranged to keep cable runs tidy and components accessible, while back-connect motherboard compatibility frees up front-facing space for cooling and drive placement.
Simpler builds with less cable clutter and enough room to assemble high-performance parts on a compact desk or in tight areas.
Supports large GPUs and multiple radiators - with generous clearance and multi-fan support
GPU clearance reaches up to 377 mm without front fans, 352 mm with front fans, and 317 mm when a front radiator and fans are fitted. The chassis accepts up to seven fans and front/top radiators of 280 mm and 240 mm respectively.
Allows installation of full-size graphics cards and sizeable AIO coolers, making the build suitable for gaming or workstation use despite the smaller case size.
✨ The 4 Key Reasons for NZXT H3 Flow Micro-ATX PC Case
- Ultra-fine steel mesh panels - Maximises airflow while reducing dust build-up inside the chassis
- 280 mm front radiator support - Enables large AIO coolers for lower CPU temperatures during heavy use
- Supports GPUs up to 377 mm - Accommodates high-end graphics cards without compromising component choice
- Pre-installed F120Q 120 mm rear fan - Provides immediate exhaust airflow for out-of-the-box cooling
📋 Technical Details at a Glance
- Brand: NZXT
- Model: H3 Flow
- Category: Micro-ATX PC Case
- Colour: Black
- Panels: Ultra-fine steel mesh on panels and PSU shroud
❓ Frequently Asked Questions
Q: Can I fit a full-size graphics card in this case?
A: Yes. GPU clearance reaches up to 377 mm without front fans, 352 mm with front fans, and 317 mm when a front radiator and fans are installed.
Q: Does the case support liquid cooling radiators?
A: Yes. The front accepts up to a 280 mm radiator and the top accepts up to a 240 mm radiator, allowing sizeable AIO cooling setups.
Q: Is a fan included for immediate use?
A: Yes. A F120Q (CV) 120 mm rear fan is pre-installed for exhaust airflow straight out of the box.
🏆 Our Verdict
Compact-system builders and gamers who need strong cooling without an ATX footprint will find this case well suited. The combination of ultra-fine mesh panels, multi-radiator support and roomy GPU clearance sets it apart among small enclosures. Solid construction and thoughtful layout make it a dependable choice that should remain useful through upgrades over time.
