Thermaltake
The Tower 300 Micro Tower Chassis
Best micro-tower for enthusiasts wanting a bold, customizable aesthetic.
Experience the unique octagonal prism design of The Tower 300 Bubble Pink Micro Tower Chassis. This m-ATX case boasts a classic vertical orientation and a striking Bubble Pink finish. It offers excellent compatibility for high-end components, including GPUs up to 400mm and PSUs up to 220mm. Cooling is optimized with support for a 420mm AIO radiator and up to eight fans, plus two pre-installed 140mm PWM fans. Customize your build with optional kits for horizontal placement or an LCD screen.
$4390.00
Owner Satisfaction
4.5
/ 5
Category Rank
175
/ 904
#175 in Desktop Computer Cases
Price vs Category Average
+588%
Above average
Form Factor
m-ATX
/ m-ATX
Who it's for
- Gamers wanting a bold, personalized centerpiece for their desk
- Performance users needing efficient cooling for high-end hardware
- PC builders who love showcasing custom RGB lighting and components
Who should skip it
- Users with limited desk space needing a compact footprint
- Minimalists who prefer neutral colors for long-term setup flexibility
- Beginners who find complex cable management and tight spaces frustrating
Performance breakdown
Thermal Efficiency
Vertical airflow design keeps high-end components remarkably cool under heavy loads.
Component Compatibility
Accommodates massive GPUs and large radiators despite the compact micro-tower footprint.
Build Accessibility
Tool-free panels make internal access and component installation a seamless experience.
Aesthetic Customization
Unique octagonal prism shape offers a striking visual centerpiece for any desk.
Build Versatility
Optional LCD and horizontal stand kits provide excellent modularity for enthusiasts.
Dust Management
Integrated filters effectively protect internals while maintaining consistent airflow paths.
Key Specs
Form Factor
m-ATX
Motherboard Compatibility
Micro ATX
Case Type
Mini Tower
Max GPU Length
400mm (without power cover)
Max CPU Cooler Height
210mm
Max PSU Length
Up to 220mm
Drive Bays
Three 2.5'' SSDs or three 3.5'' HDDs
Radiator Support
Up to 420mm on the right side
Features
- Distinctive octagonal prism design
- Tool-free access for easy building
- Supports large GPUs and radiators
- Optimized airflow with multiple fan mounts
- Includes dust filters for clean internals
- Optional LCD screen for customization
- Optional stand for horizontal orientation
What customers say
Customers overwhelmingly celebrate the chassis's striking aesthetic, particularly the vibrant Bubble Pink color and the panoramic glass panels. This case is a statement piece, driving high satisfaction purely on design. Builders appreciate the robust quality and the surprisingly flexible interior layout, which makes component installation straightforward despite the micro tower format. While it commands a premium price, users feel the unique visual impact and solid construction justify the investment, making it a favorite for themed builds.
Know before you buy
The Tower 300 is specifically designed for Micro-ATX motherboards. It will not accommodate larger ATX or E-ATX boards.
Yes, the case supports GPUs up to 400mm in length, provided you are not using the power cover. This allows for most modern, high-performance graphics cards to fit comfortably.
No, the LCD screen is an optional accessory that must be purchased separately. It is designed to mount onto the case to display system information or custom images.
The case is optimized for airflow with support for up to eight fans and a 420mm AIO radiator on the right side. It comes with two pre-installed 140mm PWM fans to get your cooling setup started.
The Tower 300 is designed for a vertical orientation by default. However, you can purchase an optional stand kit if you prefer to place the case horizontally.
You can install up to three 2.5-inch SSDs or three 3.5-inch HDDs, providing a flexible amount of storage for a Micro-ATX build.
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Ask Hayley anything about this product before you decide.
Ready to buy?
$4390