PC Case Thermaltake 300 Turquoise Micro Tower

The Thermaltake Tower 300 Turquoise is an m-ATX micro tower chassis with an octagonal-prism silhouette and a classic vertical layout. It supports a 4090-class GPU, standard ATX power supplies up to 220 mm in length, and up to a 420 mm AIO radiator mounted on the right side. The case ships with two preinstalled 140 mm PWM fans and features tempered glass and perforated removable panels for easy access and maintenance.

Advantages

The Tower 300 Turquoise combines compact vertical design with extensive cooling and hardware support: space for up to eight 120/140 mm fans (distributed across top, back, PSU cover and right-side bracket), compatibility with up to 420 mm radiators on the right, support for CPU coolers up to 210 mm height, GPU lengths up to 400 mm (without power cover), and storage options for three 2.5" SSDs or three 3.5" HDDs. Tool-free tempered glass and perforated panels, dust filters, and top-panel USB-C and USB 3.0 ports simplify installation and daily use.

Suitable for

• Compact gaming or workstation builds using Micro-ATX motherboards
• High-performance systems requiring large GPUs (up to 4090-class) and strong cooling
• AIO liquid-cooled setups with up to a 420 mm radiator on the right side

Key specifications

• Form factor: Micro Tower, supports Micro-ATX and Mini-ITX motherboards
• Dimensions (approx.): 342 mm (W) x 281 mm (D) x 551 mm (H)
• Maximum GPU length: 400 mm (without power cover)
• Maximum PSU length: 220 mm
• Maximum CPU cooler height: 210 mm
• Radiator support (right side): up to 420 mm / 360 mm
• Preinstalled fans: two CT140 140 mm PWM fans (top)
• Drive bays: up to three 2.5" SSDs or three 3.5" HDDs
• Front/top I/O: 1× USB 3.2 Gen 2 Type-C, 2× USB 3.0 Type-A
• Material: SPCC; Colour: Turquoise

How to use

Install a Micro-ATX or Mini-ITX motherboard, fit the power supply up to 220 mm at the bottom, and mount storage drives in the available 2.5" or 3.5" bays. For right-side radiator installation, remove the detachable fan bracket and place either three 120/140 mm fans or a 360/420 mm AIO radiator. The three 3 mm tempered glass panels and side perforated panels are removable without tools to ease component installation and cable routing.

Recommendations

When using an AIO radiator, position the radiator higher than the pump to improve coolant flow and reduce the risk of air trapping. Use the optional Chassis Stand Kit for horizontal placement if you want an alternate viewing orientation, and consider the 3.9" LCD Screen Kit (sold separately) to display system information and custom images.