Thermaltake
The Tower 300 Micro Tower Chassis
Best compact chassis for enthusiasts wanting a unique, high-performance display build.
Introducing The Tower 300 Hydrangea Blue, a striking m-ATX chassis that redefines PC building with its unique octagonal prism design. This special edition celebrates Thermaltake's 25th Anniversary, featuring a refreshing Hydrangea Blue finish and the signature vertical orientation of The Tower Series. It offers exceptional compatibility for high-end components, including support for a 4090 GPU and a 420mm AIO radiator. Enjoy easy access with tool-free panels and visualize your system's performance with an optional interactive 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
Motherboard Compatibility
Mini ITX, Micro ATX
/ Mini ITX, Micro ATX
Who it's for
- Performance enthusiasts prioritizing efficient cooling for compact micro builds
- Design-focused users wanting a standout centerpiece for their desk
- Flexible builders needing adaptable orientation for unique desk layouts
Who should skip it
- Novice builders seeking a quick and easy component installation process
- Power users planning to install oversized GPUs or large power supplies
- Minimalists with limited desk space for wide-base chassis
Performance breakdown
Thermal Management
Vertical airflow design handles high-end components with impressive thermal efficiency.
Component Compatibility
Accommodates massive GPUs and 420mm radiators within a compact footprint.
Build Accessibility
Tool-free panels make hardware installation and maintenance remarkably straightforward.
Aesthetic Impact
The octagonal prism design creates a stunning centerpiece for any desk.
Monitoring Integration
Optional LCD screen provides real-time system data with modern flair.
Space Efficiency
Vertical orientation saves desk space while maintaining a premium visual presence.
Key Specs
Motherboard Compatibility
Mini ITX, Micro ATX
Max CPU Cooler Height
210mm
Max GPU Length
400mm
Max PSU Length
220mm
Radiator Support
Up to 420mm
Pre-installed Fans
Two 140mm PWM
Drive Bays
Three 2.5'' SSD or 3.5'' HDD
Side Panels
Tempered Glass and Mesh
Features
- Unique octagonal prism design
- Special Hydrangea Blue anniversary color
- Supports large 420mm AIO radiators
- Tool-free access for easy building
- Optional horizontal placement
- Interactive LCD screen for monitoring
- Excellent airflow with included fans
- Tempered glass and mesh panel options
What customers say
The chassis's striking aesthetic, especially the Hydrangea Blue finish and unique hexagonal shape, is a major draw. Many buy this case as a display piece, appreciating how well it showcases internal components. Reviewers praise its robust build quality and smart vertical orientation, which saves desk space. While the distinctive design can make initial assembly a bit tricky, the final setup is consistently seen as a premium, high impact build that offers excellent value for the investment.
Know before you buy
Yes, the Tower 300 supports GPUs up to 400mm in length, which accommodates most high-end 4090 models. Its vertical orientation is specifically designed to handle large, heavy cards without the typical sag issues found in traditional horizontal cases.
Yes, the chassis is designed to support horizontal placement. You will need to purchase the optional chassis stand kit separately to ensure proper stability and airflow in that orientation.
The interactive LCD screen is an optional accessory and is not included with the base chassis. You can purchase the LCD panel kit separately if you want to display system vitals or custom images.
This case is compatible with Mini-ITX and Micro-ATX motherboards. It is not compatible with standard ATX or E-ATX motherboards.
The case comes with two pre-installed 140mm PWM fans and features a chimney-effect airflow design that pulls cool air from the bottom and exhausts it out the top. The combination of mesh panels and high-airflow fans ensures your components stay cool even under heavy loads.
Yes, the Tower 300 is specifically engineered to support AIO radiators up to 420mm. This makes it an excellent choice for users who want to pair a high-performance CPU with a large liquid cooling loop in a compact footprint.
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Ask Hayley anything about this product before you decide.
Ready to buy?
$4390