Infos slot mémoire:

  dmidecode -q -t memory | grep Size

Infos processeur:

  dmidecode -s processor-family
  dmidecode -s processor-manufacturer
  dmidecode -s processor-version
  dmidecode -s processor-frequency

Infos système et baseboard:

  dmidecode -s system-manufacturer
  dmidecode -s system-product-name
  dmidecode -s system-version
  dmidecode -s system-serial-number
  dmidecode -s baseboard-manufacturer
  dmidecode -s baseboard-product-name
  dmidecode -s baseboard-version
  dmidecode -s baseboard-serial-number
  dmidecode -s baseboard-asset-tag

Source