This article covers Thermaltake S100 TG Snow ミニタワーPCケース.

Overview

The Thermaltake S100 TG Snow is a compact mini-tower case that balances expandability and cooling with an elegant white finish. Its standout feature is the left-side tempered glass swing door, which makes internal components easily accessible and showcases your build. The case supports Micro-ATX and Mini-ITX motherboards, making it ideal for those who want a clean, white-themed PC without breaking the bank. Graphics cards up to 330mm in length fit comfortably, so even high-end GPUs like the RTX 4080 are accommodated. The top panel can house a 280mm radiator for liquid cooling, keeping thermals under control in a small footprint. With a price around ¥5,000, this case punches above its weight in both looks and functionality.

Compatibility Guide

The S100 TG Snow only supports Micro-ATX and Mini-ITX motherboards; standard ATX boards are not compatible. Power supply mounting is rear-oriented and accepts standard ATX PSUs. Cable management space is tight but the swing door gives you easy access to adjust wiring. Maximum GPU length is 330mm, and while the CPU cooler height limit isn't officially specified, users report around 155mm of clearance — enough for most mid-tower air coolers and short AIOs. The top radiator support (up to 280mm) is a bonus for liquid cooling enthusiasts, but note that front radiator mounting is not supported.

Product Info

Released around 2020, the Thermaltake S100 TG Snow remains a popular choice in the entry-to-mid-range segment. It comes with a 2-year warranty via the official Japanese distributor. The construction combines steel and tempered glass, weighing approximately 5.5kg. At its price point, it offers a unique white aesthetic rarely found in budget cases. While it ships with only one rear 120mm fan, you can add up to four more fans (two front, one top, one rear) to optimize airflow.

Best Use Cases

White-themed PC builders on a budget: The white finish and glass panel let you show off RGB components without spending a lot. Perfect for first-time builders aiming for a clean look. Space-conscious gamers: Pair a Micro-ATX board with a mid-range GPU (e.g., RTX 4060 or RX 7600) for a compact yet capable gaming rig. The 280mm radiator support keeps temperatures in check. * Frequent tinkerers: The swing door eliminates the hassle of removing and replacing a side panel with screws. Swapping out drives or cleaning dust becomes much quicker. ## Alternatives
In the same price bracket, competitors include the Fractal Design Focus G Mini and the Corsair iCUE 220T. The Focus G Mini offers better out-of-the-box cooling with its mesh front, while the 220T includes RGB fans but costs more. The S100 TG Snow stands out for its white aesthetics and swing door design — ideal if looks are your priority. However, if you require front radiator mounting or need support for a tall air cooler, consider the Focus G Mini instead. The S100 TG Snow's top-only radiator limitation may be a deal-breaker for some water-cooling enthusiasts.

Things to Consider

First, ATX motherboards are not supported — if you already have an ATX board, look elsewhere. Second, the case comes with only one rear fan; you'll need to purchase additional fans for adequate airflow, especially if using high-power components. The limited cable management depth can also make tidy wiring challenging, even with a modular PSU. Third, CPU cooler height is not officially listed, so measure carefully if planning a tall air cooler. Many users have found that coolers up to ~155mm fit, but there's no guarantee. Finally, if you want a case with pre-installed front fans or a mesh front panel for better airflow, the S100 TG Snow might feel restrictive without modifications.

Product Disclosure (Amazon)

  • Manufacturer: Thermaltake
  • Seller: Amazon.co.jp
  • Fulfilled by: Amazon.co.jp
  • ASIN: B0886K75W2
  • Note: This article covers a manufacturer-made product based on Amazon listing details.