The Thermaltake S100 TG is the smallest of the S series family, but clearly sports the same design language as its bigger brethren. The original intention of the S series was always to offer a more affordable option to the aluminium variants with a similar look and feel. This has clearly been achieved even with the small S100 TG.

Thermaltake has also thrown in the ability to install a large 200 mm fan in either the front or the ceiling, which is a somewhat unique as most other brands opt for 140 mm units at most. Additionally, the 280 mm radiator support in the front is also a nice push of the envelope for a mini-tower chassis. However simple the case may look at first sight, Thermaltake even managed to add a few nice details to it for the price point. These include hinges and magnets for the uniquely shaped glass panel and a little indentation in the metal mesh, on the side of the front panel, for better grip with the edge of the glass side panel.

The interior is a bit on the simple side, more so than the larger S variants from Thermaltake. On one hand, the chassis comes with breakout covers for its expansion slots, which is an annoyance for enthusiasts who always tinker with their systems, though alleviated a little bit by the inclusion of two such covers as accessories. The other issue is the I/O, which is simply not modern enough with even entry-level motherboards offering USB 3.0 headers these days, so the focus on two USB 2.0 and a single 3.0 connector is misplaced.

However simple the interior may be, the detail to functionality within the Thermaltake S100 TG results in quite the nice assembly experience. Sure, we are definitely missing the rubber grommets, but due to plenty of well-placed zip-tie hooks, cable management is still super clean in the end. On a more tangible note, it would have been nice if the S100 TG would have come with one or two more all-black fans to push that price vs. performance element a bit more, especially as the employed fan in the rear is simply too weak; as the old Thermaltake logo reveals, way too old to even be around anymore. That is one area that can certainly be improved upon as fans are not simply a marketing check box anymore with many brands including retail-grade units.

Even so, the Thermaltake S100 TG is recommendable as it clocks in at an adequate $65, though we would have loved to see it for less in the US since European customers get to buy it at an equivalent of $60–$65 including taxes.