The Corsair Frame 4000D RS is a significant upgrade from its predecessor, boasting enhanced cooling capabilities, wider component support, and a refreshed design. The case retains the elegant simplicity that made the original so appealing to many builders.

Key features include movable plates that facilitate easier cable management, improved cooling with better airflow, and an overall more versatile build environment. However, this comes at the cost of increased noise levels and a departure from the original's minimalist aesthetic.

The new Frame 4000D RS is undoubtedly one of the best cases for enthusiasts looking to build high-performance systems, despite some minor usability issues. The case’s advanced design caters more to high-end computing nerds, offering plenty of room for customization and powerful components.

While it may not be an exact match in elegance, the Frame 4000D RS still shines with its innovative features such as flexible component support and smooth cable management. It's a standout option that justifies its slightly higher price point among enthusiasts.