NZXT H2 Flow vs Cooler Master 690 III Case Comparison

The main differences between NZXT H2 Flow and Cooler Master 690 III 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 690 III
Prices (Change region) In Stock Free shipping $149.99 Out of Stock $189.14	Prices (Change region) - Buy now
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Pangoly Score (How do we rate?) -	Pangoly Score (How do we rate?) 89
Brand NZXT	Brand Cooler Master
Model CI-H21FB-01	Model CMS-693-KKN1
Release Date 📅 February 2026	Release Date 📅 September 2014
* First availability for purchase, it may not correspond to the actual market launch date.
User reviews Add a product review	User reviews ★★★★★ (41 reviews) Add a product review
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 Mini ITX Tower	Type ATX 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 3
External 3.5" Drive Bays 0	External 3.5" Drive Bays 0
Internal 2.5" Drive Bays 2	Internal 2.5" Drive Bays 3
Internal 3.5" Drive Bays 0	Internal 3.5" Drive Bays 7
Motherboard Compatibility Mini ITX	Motherboard Compatibility ATX, 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 230 mm x 507 mm x 502 mm
Volume 21 L	Volume 59 L
Max VGA length allowance 331 mm	Max VGA length allowance 423 mm
Expansion Slots 3	Expansion Slots 7
Back Connect Support No	Back Connect Support No
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