@amine-sahnoun There is a free version of XOA that you can use, but also the full version of XO can be built from the sources, they have pretty good documentation on how to do so.
@iLix thks for replay,
No bios and firmware are not up to date.
other questions
The misplacement of the RAM has an impact on the performance or otherwise, where you can see on two servers:
Empty sockets.png
