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Compare NZXT H2 Flow vs Phanteks Enthoo Series Primo

The main differences between NZXT H2 Flow and Phanteks Enthoo Series Primo 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
Phanteks
Model
CI-H21FB-01
Model
PH-ES813P_SRD
Release Date
📅 February 2026
Release Date
-
* First availability for purchase, it may not correspond to the actual market launch date.
User reviews
User reviews
★★★★☆
(13 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
Black/Red
Includes Power Supply
No
Includes Power Supply
No
External 5.25" Drive Bays
0
External 5.25" Drive Bays
5
External 3.5" Drive Bays
0
External 3.5" Drive Bays
0
Internal 2.5" Drive Bays
2
Internal 2.5" Drive Bays
12
Internal 3.5" Drive Bays
0
Internal 3.5" Drive Bays
6
Motherboard Compatibility
Mini ITX
Motherboard Compatibility
ATX, EATX, Micro ATX, Mini ITX, SSI EEB
Front Panel I/O
USB 3.2 Gen 1 Type A, USB 3.2 Gen 2x2 Type C
Front Panel I/O
USB 2.0 Type A, USB 3.2 Gen 1 Type A
Dimensions
263 mm x 181 mm x 435 mm
Dimensions
250 mm x 650 mm x 600 mm
Volume
21 L
Volume
98 L
Max VGA length allowance
331 mm
Max VGA length allowance
257 mm
Max VGA length allowance (w/o HDD cage)
-
Max VGA length allowance (w/o HDD cage)
515 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:

  • 46% cheaper, you can save $130.00
  • Additional VGA length allowance (+74.00mm)
  • Supports the following front panel USB ports: USB 3.2 Gen 2x2 Type C

Buy now

Reasons to buy the Phanteks Enthoo Series Primo:

  • +5 external 5.25" bays
  • +10 internal 2.5" bays
  • +6 internal 3.5" bays
  • +5 Expansion slots
  • Supports the following motherboard formats: ATX, EATX, Micro ATX, SSI EEB
  • Supports the following front panel USB ports: USB 2.0 Type A
  • Hugely more space available (+79% total case volume)

Buy now

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