Thermaltake's Core X5 cube cases are expandable and flexible
 

Part of the draw of desktop PCs is the assurance that everything can be upgraded. A four-year-old graphics card that isn't keeping up with modern games can simply be replaced, for example. For its new Core X5 series cases, Thermaltake is betting that builders want that same modularity and flexibility for their cases.

http://techreport.com/news/29642/the...e-and-flexible