Thermaltake The Tower 300 case, black (Micro-ATX)

The Thermaltake The Tower 300 (black) is a compact vertical micro‑ATX chassis with an octagonal prism design. It’s aimed at small‑footprint builds — from home office rigs to compact gaming PCs and custom liquid‑cooled systems — where usable internal volume and radiator support matter more than a wide footprint.

The case ships with two 140 mm fans installed and supports large side radiators (up to 420 mm). GPU clearance reaches up to 400 mm without a right‑side radiator, or about 280 mm when a radiator is fitted on the right; CPU cooler height is around 210 mm. The Tower 300 accepts Micro‑ATX and Mini‑ITX motherboards and standard ATX PSUs up to approximately 220 mm, giving flexibility for a variety of builds.

Specifications

• Case form factor: Micro‑ATX (supports Micro‑ATX, Mini‑ITX).
• Dimensions (H × W × D): 551 × 342 × 281 mm.
• Max GPU length: 400 mm (without right radiator) / 280 mm (with right radiator).
• Radiator support (right/side): Up to 420 mm (supports 420/360/280/240/140 mm depending on layout).
• Included fans: 2 × 140 mm.
• Fan support: Top: up to 2 × 140 mm or 3 × 120 mm.
• Max CPU cooler height: ~210 mm.
• Max PSU length: ~220 mm.
• Expansion slots: 4 (full‑height, horizontal).
• Materials & panels: Steel chassis with tempered glass side panel (standard model).