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Compare NZXT H2 Flow vs be quiet! DARK BASE PRO 901 White

The main differences between NZXT H2 Flow and be quiet! DARK BASE PRO 901 White are in External 5.25" Drive Bays, Internal 2.5" Drive Bays, Internal 3.5" Drive Bays and Motherboard Compatibility.
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Brand
NZXT
Brand
be quiet!
Model
CI-H21FB-01
Model
BGW51
Release Date
📅 February 2026
Release Date
-
* First availability for purchase, it may not correspond to the actual market launch date.
User reviews
User reviews
Price history
View Details ►
Price history
View Details ►
Compatible PC parts
Compatible PC parts
Type
Mini ITX Tower
Type
ATX Full Tower
Color
Black
Color
White
Includes Power Supply
No
Includes Power Supply
No
External 5.25" Drive Bays
0
External 5.25" Drive Bays
1
External 3.5" Drive Bays
0
External 3.5" Drive Bays
0
Internal 2.5" Drive Bays
2
Internal 2.5" Drive Bays
6
Internal 3.5" Drive Bays
0
Internal 3.5" Drive Bays
2
Motherboard Compatibility
Mini ITX
Motherboard Compatibility
ATX, EATX, Micro ATX, Mini ITX, XL ATX
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 2 Type C
Dimensions
263 mm x 181 mm x 435 mm
Dimensions
604 mm x 275 mm x 569 mm
Volume
21 L
Volume
95 L
Max VGA length allowance
331 mm
Max VGA length allowance
350 mm
Max VGA length allowance (w/o HDD cage)
-
Max VGA length allowance (w/o HDD cage)
495 mm
Expansion Slots
3
Expansion Slots
8
Back Connect Support
No
Back Connect Support
No
-

Comparison and key differences summary

Reasons to buy the NZXT H2 Flow:

  • 25% cheaper, you can save $49.89
  • Supports the following front panel USB ports: USB 3.2 Gen 2x2 Type C

Buy now

Reasons to buy the be quiet! DARK BASE PRO 901 White:

  • +1 external 5.25" bays
  • +4 internal 2.5" bays
  • +2 internal 3.5" bays
  • Additional VGA length allowance (+19.00mm)
  • +5 Expansion slots
  • Supports the following motherboard formats: ATX, EATX, Micro ATX, XL ATX
  • Supports the following front panel USB ports: USB 3.2 Gen 2 Type C
  • Hugely more space available (+78% total case volume)

Buy now

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