NZXT H2 Flow vs Cooler Master Cosmos II 25th ANNIVERSARY Edition Case Comparison

The main differences between NZXT H2 Flow and Cooler Master Cosmos II 25th ANNIVERSARY Edition 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

Cooler Master Cosmos II 25th ANNIVERSARY Edition

Prices
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In Stock

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$149.99

Out of Stock

$189.14

Prices
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Brand

NZXT

Brand

Cooler Master

Model

CI-H21FB-01

Model

RC-1200-KKN2

Release Date

📅 February 2026

Release Date

📅 July 2017

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

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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

ATX Full Tower

Color

Black

Color

Black/Silver

Includes Power Supply

External 5.25" Drive Bays

External 3.5" Drive Bays

Internal 2.5" Drive Bays

Internal 3.5" Drive Bays

Motherboard Compatibility

Mini ITX

Motherboard Compatibility

ATX, EATX, Micro ATX, Mini ITX, SSI CEB, SSI EEB, 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 2.0 Type A, USB 3.2 Gen 1 Type A

Dimensions

263 mm x 181 mm x 435 mm

Dimensions

664 mm x 344 mm x 704 mm

Volume

21 L

Volume

161 L

Max VGA length allowance

331 mm

Max VGA length allowance

190 mm

Max VGA length allowance (w/o HDD cage)

385 mm

Expansion Slots

Back Connect Support

Options (28)

	FULL Tower Cosmo 2 black
	FULL Tower Cosmos C700P
	FULL Tower Stryker SE
	FULL Tower Trooper SE
	LAN Box Elite 110 $199.99
	LAN Box Elite 330 $64.99
	LAN Box HAF XB EVO $79.99
	MID Tower H500P
	MID Tower H500P White Mesh $154.99
	MID Tower HAF 912
	MID Tower MB Lite 5 RGB
	MID Tower MB600L Red Trim $68.99
	MID Tower MC500 $224.46
	MID Tower MC500M
	MID Tower MC500Mt
	MID Tower MC500P $786.55
	MID Tower MC600P
	MID Tower MasterBox 5
	MID Tower MasterBox 5 White
	MID Tower MasterBox Pro 5 RGB $109.99
	MID Tower MasterCase Pro 5
	MID Tower N400 $79.99
	MINI Tower MB Lite 3.1 $49.99
	MINI Tower MB Lite 3.1 TG $64.99
	MINI Tower N200 $59.99
	MINI Tower Q300L $39.99
	MINI Tower Q300P $331.80
	MINI Tower Silencio 352

Comparison and key differences summary

Reasons to buy the NZXT H2 Flow:

Newer Product, it was released around 9 years later
+2 internal 2.5" bays
Additional VGA length allowance (+141.00mm)
Supports the following front panel USB ports: USB 3.2 Gen 2x2 Type C

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Reasons to buy the Cooler Master Cosmos II 25th ANNIVERSARY Edition:

+3 external 5.25" bays
+13 internal 3.5" bays
+7 Expansion slots
Supports the following motherboard formats: ATX, EATX, Micro ATX, SSI CEB, SSI EEB, XL ATX
Supports the following front panel USB ports: USB 2.0 Type A
Hugely more space available (+87% total case volume)