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NZXT H9 Flow (White)
A large dual-chamber glass tower with 459 mm GPU room, 420 mm radiators and four fans included.
- Dual Chamber
- E-ATX, ATX, Micro-ATX, Mini-ITX
- 459 mm
- 165 mm
- 76.7 L
PCPR score
7.8
Good
Best price we’ve seen
$170Nov 9
Checked recently. Confirm at the retailer.
R1
The short version
The H9 Flow is NZXT's large dual-chamber case with wraparound glass, angled front-right fan mounts and mounts for up to ten fans. NZXT lists GPUs up to 459 mm (410 mm with a thick 420 mm AIO at the front-right), 165 mm coolers, E-ATX support and 420 mm radiators on the top and front-right. Three F140Q and one F120Q fan are included.
Pros
- Four fans included
- 459 mm GPU clearance
- 420 mm radiators on the top and front-right
- Two USB-A and a 20 Gbps USB-C on the front
Cons
- 165 mm cooler limit
- Large and heavy
- GPU limited to 410 mm with a 56 mm 420 mm AIO at the front-right
Best for
- Large GPU builds
- AIO builds with display value
J3
Full specifications
Core
- Style
- Dual Chamber
Fit
- Motherboard support
- E-ATX, ATX, Micro-ATX, Mini-ITX
- Max GPU length
- 459 mm
- Max GPU with front radiator
- 410 mm
- Max CPU cooler height
- 165 mm
- PSU support
- ATX
- Max PSU length
- 200 mm
- Expansion slots
- 7
- 3.5" bays
- 2
- 2.5" bays
- 6
Cooling
- Front radiator
- 120, 140, 240, 280, 360, 420
- Top radiator
- 120, 140, 240, 280, 360, 420
- Rear radiator
- 120
- Bottom radiator
- 120, 140, 240, 280, 360
- Total fan mounts
- 10
- Fans included
- 4
Ports & I/O
- Front USB-C
- Yes
- Front USB-A
- 2
Physical
- Side panel
- Tempered glass
- Color
- White
- Length
- 481 mm
- Width
- 315 mm
- Height
- 506 mm
- Volume
- 76.7 L
- Weight
- 12.46 kg
Compatibility notes
- Radiator plus fan thickness at the top: up to 80 mm (360 mm) or 62 mm (420 mm).
- PSU up to 200 mm; coolers up to 165 mm.
- H9 Flow RGB and RGB+ are separate models.
P1
Where to buy
Best Buy
Seen Nov 9, 2026
$169.99
See it at Best Buy- Buy from the maker
NZXT official page
Direct link
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AV1
Video reviews
No verified video reviews yet
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AV2
What reviewers and owners say
Tom's Hardware
PositiveTom's Hardware found this large fishbowl-style chassis roomy and well-priced, with strong airflow, dual 420mm radiator support, six-drive capacity, and generous cable routing space, though vertical GPU mounting is absent.
Review
Read the source
Summaries are written in our words. Follow the links for each source’s own review.
R9
Common questions
How long a GPU fits?
NZXT lists up to 459 mm, or 410 mm with a 56 mm thick 420 mm AIO at the front-right.
How many fans are included?
Three F140Q and one F120Q, according to the maker's published specification page for this model.
Is there an RGB version?
Yes, NZXT sells H9 Flow RGB and RGB+ as separate models.
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