We were initially impressed by the clean and well-designed Divider 300 TG ARGB, but its compact dimensions significantly limit air-cooler size and placement possibilities for liquid coolers, at an MSRP of US$109 at launch. While the Divider 500 TG ARGB utilizes the same frame as a base and is thus subject to some of the same limitations, its additional size and a few tooling adjustments significantly alleviate some of those pain points. On top of that, all things considered, the $150 price tag feels as though it offers a bit more bang for your buck.

Compared to the Divider 300, the additional height of the chassis allows Thermaltake to provide a more functional design with the Divider 500 in the ceiling. The simple steel top is replaced by a beautiful, clean glass cover and the ability to install up to a 280 mm radiators easily with the removable frame. This results in the Divider 500 TG ARGB really coming together to fulfill the design promise of the new Divider line, whereas the 300 TG simply could not.

Thermaltake also goes as far as to place glass behind the motherboard tray for you to show off that side of the system, but the two additional panels to go full glass on the main side and for air vents on the backside are a real boon as well, adding both value for money and flexibility.

That said, the case frame fundamentally remains the same, with small tooling additions to add height and updates for better front-liquid-cooling support or additional cutouts for cable management. Proprietary ARGB fan connectors and the lack of RPM control due to Thermaltake's controller choice are still issues. The 150 mm air cooler clearance and limited GPU length when installing a radiator and fan setup on the side also remain. However, these two points are alleviated a bit with generally better better liquid-cooling support within the Divider 500 TG ARGB.

With all that in mind, the Divider 500 TG ARGB is the better choice if you had to pick between it and the 300 series. While we can recommend the case, we remain hopeful that Thermaltake moves away from proprietary fan connectors and limiting hubs when other brands offer fully fledged RPM/PWM-controlled and universally expandable fan and ARGB hub combos in cases that clock in under $100.