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Compare NZXT H2 Flow vs Thermaltake Versa H15

The main differences between NZXT H2 Flow and Thermaltake Versa H15 are in External 5.25" Drive Bays, Internal 2.5" Drive Bays, Internal 3.5" Drive Bays and Motherboard Compatibility.

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NZXT H2 Flow

Thermaltake Versa H15

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Brand

NZXT

Brand

Thermaltake

Model

CI-H21FB-01

Model

CA-1D4-00S1NN-00

Release Date

📅 February 2026

Release Date

📅 June 2015

* First availability for purchase, it may not correspond to the actual market launch date.

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User reviews

★★★★☆

(41 reviews)

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Price history

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Compatible PC parts

Motherboards ► Graphics Cards ► Power Supplies ► CPU Coolers ►

Compatible PC parts

Motherboards ► Graphics Cards ► Power Supplies ► CPU Coolers ►

Type

Mini ITX Tower

Type

MicroATX Mid Tower

Color

Black

Color

Black

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

0

Internal 3.5" Drive Bays

0

Internal 3.5" Drive Bays

3

Motherboard Compatibility

Mini ITX

Motherboard Compatibility

Micro ATX, 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 2.0 Type A, USB 3.2 Gen 1 Type A

Dimensions

263 mm x 181 mm x 435 mm

Dimensions

378 mm x 198 mm x 411 mm

Volume

21 L

Volume

31 L

Max VGA length allowance

331 mm

Max VGA length allowance

315 mm

Expansion Slots

3

Expansion Slots

4

Back Connect Support

No

Back Connect Support

No

-

Options (3)

	H15/18 Micro ATX Tempered Glass w Blue Strip $54.99
	H24/26 ATX No Window
	H24/26 ATX Tempered Glass $172.65

Comparison and key differences summary

Reasons to buy the NZXT H2 Flow:

Newer Product, it was released around 11 years later
+2 internal 2.5" bays
Additional VGA length allowance (+16.00mm)
Supports the following front panel USB ports: USB 3.2 Gen 2x2 Type C

Reasons to buy the Thermaltake Versa H15:

37% cheaper, you can save $54.85
+1 external 5.25" bays
+3 internal 3.5" bays
+1 Expansion slots
Supports the following motherboard formats: Micro ATX
Supports the following front panel USB ports: USB 2.0 Type A
Much more space available (+33% total case volume)

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