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Compare Zalman Z3 vs NZXT H2 Flow

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  2. Cases
  3. Zalman Z3 🆚 NZXT H2 Flow
The main differences between Zalman Z3 and NZXT H2 Flow are in External 5.25" Drive Bays, Internal 2.5" Drive Bays, Internal 3.5" Drive Bays and Motherboard Compatibility.
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Zalman Z3 ATX Mid Tower
Zalman Z3
NZXT H2 Flow SFF Mini-ITX Black Tempered Glass CI-H21FB-01
NZXT H2 Flow
Prices
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-
Buy now
Prices
(Change region)
In Stock
Free shipping
$149.99
Out of Stock
$189.14
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Brand
Zalman
Brand
NZXT
Model
Z3
Model
CI-H21FB-01
Release Date
📅 October 2013
Release Date
📅 February 2026
* 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
Motherboards ► Graphics Cards ► Power Supplies ► CPU Coolers ►
Compatible PC parts
Motherboards ► Graphics Cards ► Power Supplies ► CPU Coolers ►
Type
ATX Mid Tower
Type
Mini ITX Tower
Color
Black
Color
Black
Includes Power Supply
No
Includes Power Supply
No
External 5.25" Drive Bays
2
External 5.25" Drive Bays
0
External 3.5" Drive Bays
0
External 3.5" Drive Bays
0
Internal 2.5" Drive Bays
0
Internal 2.5" Drive Bays
2
Internal 3.5" Drive Bays
4
Internal 3.5" Drive Bays
0
Motherboard Compatibility
ATX, Micro ATX, Mini ITX
Motherboard Compatibility
Mini ITX
Front Panel I/O
USB 2.0 Type A, USB 3.2 Gen 1 Type A
Front Panel I/O
USB 3.2 Gen 1 Type A, USB 3.2 Gen 2x2 Type C
Dimensions
465 mm x 192 mm x 430 mm
Dimensions
263 mm x 181 mm x 435 mm
Volume
38 L
Volume
21 L
Max VGA length allowance
360 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 Zalman Z3:

  • +2 external 5.25" bays
  • +4 internal 3.5" bays
  • Additional VGA length allowance (+29.00mm)
  • +4 Expansion slots
  • Supports the following motherboard formats: ATX, Micro ATX
  • Supports the following front panel USB ports: USB 2.0 Type A
  • Much more space available (+46% total case volume)

Buy now

Reasons to buy the NZXT H2 Flow:

  • Newer Product, it was released around 13 years later
  • +2 internal 2.5" bays
  • Supports the following front panel USB ports: USB 3.2 Gen 2x2 Type C

Buy now

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