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Compare NZXT H9 Flow White vs H2 Flow

NZXT H9 Flow White and NZXT H2 Flow are both cases with the same Front Panel I/O (USB 3.2 Gen 1 Type A, USB 3.2 Gen 2x2 Type C). The main differences are in Internal 2.5" Drive Bays, Internal 3.5" Drive Bays, Motherboard Compatibility and Dimensions.
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Brand
NZXT
Brand
NZXT
Model
CM-H91FW-01
Model
CI-H21FB-01
Release Date
-
Release Date
📅 February 2026
* First availability for purchase, it may not correspond to the actual market launch date.
User reviews
User reviews
Price history
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Price history
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Compatible PC parts
Compatible PC parts
Type
ATX Mid Tower
Type
Mini ITX Tower
Color
White
Color
Black
Includes Power Supply
No
Includes Power Supply
No
External 5.25" Drive Bays
0
External 5.25" Drive Bays
0
External 3.5" Drive Bays
0
External 3.5" Drive Bays
0
Internal 2.5" Drive Bays
4
Internal 2.5" Drive Bays
2
Internal 3.5" Drive Bays
2
Internal 3.5" Drive Bays
0
Motherboard Compatibility
ATX, Micro ATX, Mini ITX
Motherboard Compatibility
Mini ITX
Front Panel I/O
USB 3.2 Gen 1 Type A, USB 3.2 Gen 2x2 Type C
Front Panel I/O
USB 3.2 Gen 1 Type A, USB 3.2 Gen 2x2 Type C
Dimensions
466 mm x 290 mm x 495 mm
Dimensions
263 mm x 181 mm x 435 mm
Volume
67 L
Volume
21 L
Max VGA length allowance
435 mm
Max VGA length allowance
331 mm
Expansion Slots
7
Expansion Slots
3
Back Connect Support
No
Back Connect Support
No
-

Comparison and key differences summary

Reasons to buy the NZXT H9 Flow White:

  • 34% cheaper, you can save $50.33
  • +2 internal 2.5" bays
  • +2 internal 3.5" bays
  • Additional VGA length allowance (+104.00mm)
  • +4 Expansion slots
  • Supports the following motherboard formats: ATX, Micro ATX
  • Hugely more space available (+69% total case volume)

Buy now

Reasons to buy the NZXT H2 Flow:

Buy now

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