Cooler Master Q300L V2 vs Cosmos II Case Comparison

The main differences between Cooler Master Q300L V2 and Cooler Master Cosmos II are in External 5.25" Drive Bays, Internal 2.5" Drive Bays, Internal 3.5" Drive Bays and Motherboard Compatibility.

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Cooler Master Q300L V2	Cooler Master Cosmos II
Prices (Change region) In Stock $73.99 Last updated 24 minutes ago. In Stock Free shipping $73.99 In Stock $79.99	Prices (Change region) - Buy now
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Brand Cooler Master	Brand Cooler Master
Model Q300LV2-KGNN-S00	Model RC-1200-KKN1
Release Date 📅 August 2023	Release Date 📅 August 2012
* First availability for purchase, it may not correspond to the actual market launch date.
User reviews Add a product review	User 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 ATX Mid Tower	Type ATX Full 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 0
Internal 3.5" Drive Bays 1	Internal 3.5" Drive Bays 13
Motherboard Compatibility Micro ATX, 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 387 mm x 230 mm x 383 mm	Dimensions 342 mm x 703 mm x 662 mm
Volume 34 L	Volume 159 L
Max VGA length allowance 360 mm	Max VGA length allowance 190 mm
Max VGA length allowance (w/o HDD cage) -	Max VGA length allowance (w/o HDD cage) 385 mm
Expansion Slots 4	Expansion Slots 10
Back Connect Support No	Back Connect Support No

Comparison and key differences summary

Reasons to buy the Cooler Master Q300L V2:

Newer Product, it was released around 11 years later
+2 internal 2.5" bays
Additional VGA length allowance (+170.00mm)
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:

+3 external 5.25" bays
+12 internal 3.5" bays
+6 Expansion slots
Supports the following motherboard formats: ATX, EATX, SSI CEB, SSI EEB, XL ATX
Supports the following front panel USB ports: USB 2.0 Type A
Hugely more space available (+79% total case volume)