3D stereoscopic based virtual reality reaches a good level of maturity. Many applications are proposed in many areas including professional tasks. Anyhow, whenever a new device appears, its added value remains an issue. In this article a CAVE with a desktop size is under focus. A manufactured product design task was selected to assess the added value of this new configuration. A panel of users were expected to achieve the task on a usual 2D desktop and within the CAVE. The experience demonstrates that the selected task takes a real advantage of the CAVE configuration.