This article covers Tower 300 バブルピンク Micro-ATXケース.
Overview
The Thermaltake Tower 300 in Bubble Pink is a distinctive Micro-ATX mini tower case featuring an octagonal prism design. Constructed from SPCC steel and 3mm tempered glass, its unique bubble pink finish stands out on any desk. The case comes pre-installed with two 140mm CT fans and supports radiators up to 420mm, offering impressive cooling potential in a compact footprint. It accommodates large graphics cards like the RTX 4090 and standard ATX power supplies, making it a versatile choice for gaming, content creation, or general business builds.
Compatibility Guide
The Tower 300 supports Mini-ITX and Micro-ATX motherboards only—full-size ATX boards will not fit. Power supply mounting is bottom-mount for standard ATX (PS2) units up to 220mm in length. GPU clearance is generous enough for high-end cards such as the RTX 4090, though exact maximum length is not officially stated. CPU cooler clearance is not specified, but users planning a top-mounted 420mm radiator should check for potential interference with tall RAM or VRM heatsinks.
Product Info
Released in 2024 as part of Thermaltake's Tower series, the Tower 300 Bubble Pink sits in the mid-range segment with a street price around ¥41,485 (approximately $290 USD) on Japan. It is available through and Thermaltake's direct store, with other color options including black and white. The package includes two CT140 fans, a screw kit, and a manual. Optional accessories include a 3.9-inch LCD screen kit for real-time system monitoring and a chassis stand kit that allows horizontal orientation.
Best Use Cases
High-performance gaming in a compact build: With support for up to 420mm radiators and flagship GPUs, gamers can build a powerful system that doesn't take up excessive desk space. The bubble pink design adds a unique aesthetic for visible setups. Enthusiast showcase builds: The octagonal shape and tempered glass panels make internal components a focal point. Combined with optional LCD screen and horizontal stand, it offers extensive customization for modders and streamers. * Space-conscious creative workstations: Micro-ATX form factor reduces footprint while still allowing high-core-count CPUs and powerful GPUs suitable for video editing, 3D rendering, or software development.
Things to Consider
The most significant limitation is the lack of ATX motherboard support—users with ATX boards must look elsewhere. At 18.3 kg, the case is surprisingly heavy for a mini tower, making assembly and repositioning more cumbersome. The included fans are only top-mounted exhaust units; for optimal airflow, additional case fans are recommended. The LCD screen kit and stand kit are sold separately, increasing total investment. Competitors like the Fractal Design Pop Mini Air or NZXT H5 Flow offer similar features at comparable prices, but the Tower 300's distinctive design and 420mm radiator support give it a unique edge for builders who prioritize aesthetics and cooling headroom.