# inxi -m
Memory:
  System RAM: total: 224 GiB available: 220.33 GiB used: 184.25 GiB (83.6%)
  Array-1: capacity: 384 GiB slots: 12 modules: 8 EC: Multi-bit ECC
  Device-1: DIMM_A1 type: DDR3 size: 16 GiB speed: spec: 1600 MT/s actual: 1066 MT/s
  Device-2: DIMM_A2 type: DDR3 size: 32 GiB speed: spec: 1333 MT/s actual: 1066 MT/s
  Device-3: DIMM_A3 type: DDR3 size: 32 GiB speed: spec: 1333 MT/s actual: 1066 MT/s
  Device-4: DIMM_A4 type: no module installed
  Device-5: DIMM_A5 type: DDR3 size: 32 GiB speed: spec: 1333 MT/s actual: 1066 MT/s
  Device-6: DIMM_A6 type: no module installed
  Device-7: DIMM_B1 type: DDR3 size: 16 GiB speed: spec: 1600 MT/s actual: 1066 MT/s
  Device-8: DIMM_B2 type: DDR3 size: 32 GiB speed: spec: 1333 MT/s actual: 1066 MT/s
  Device-9: DIMM_B3 type: DDR3 size: 32 GiB speed: spec: 1333 MT/s actual: 1066 MT/s
  Device-10: DIMM_B4 type: no module installed
  Device-11: DIMM_B5 type: DDR3 size: 32 GiB speed: spec: 1333 MT/s actual: 1066 MT/s
  Device-12: DIMM_B6 type: no module installed

Sur le portable Tuxedo :

$ inxi -m
Memory:
  System RAM: total: 64 GiB available: 62.5 GiB used: 13.15 GiB (21.0%)
  Array-1: capacity: 64 GiB note: est. slots: 2 modules: 2 EC: None
  Device-1: ChannelA-DIMM0 type: DDR4 size: 32 GiB speed: 2667 MT/s
  Device-2: ChannelB-DIMM0 type: DDR4 size: 32 GiB speed: 2667 MT/s

# dmidecode --type 17 | more
# dmidecode 3.5
Getting SMBIOS data from sysfs.
SMBIOS 3.2.0 present.

Handle 0x001A, DMI type 17, 84 bytes
Memory Device
	Array Handle: 0x0019
	Error Information Handle: No Error
	Total Width: 64 bits
	Data Width: 64 bits
	Size: 32 GB
	Form Factor: SODIMM
	Set: None
	Locator: ChannelA-DIMM0
	Bank Locator: BANK 0
	Type: DDR4
	Type Detail: Synchronous
	Speed: 2667 MT/s
	Manufacturer: Samsung
	Serial Number: -----
	Asset Tag: ----
	Part Number: M471A4G43MB1-CTD    
	Rank: 2
	Configured Memory Speed: 2667 MT/s
	Minimum Voltage: 1.5 V
	Maximum Voltage: 1.5 V
	Configured Voltage: 1.2 V
	Memory Technology: DRAM
	Memory Operating Mode Capability: Volatile memory
	Firmware Version: Not Specified
	Module Manufacturer ID: Bank 1, Hex 0xCE
	Module Product ID: Unknown
	Memory Subsystem Controller Manufacturer ID: Unknown
	Memory Subsystem Controller Product ID: Unknown
	Non-Volatile Size: None
	Volatile Size: 32 GB
	Cache Size: None
	Logical Size: None

Handle 0x001B, DMI type 17, 84 bytes
Memory Device
	Array Handle: 0x0019
	Error Information Handle: No Error
	Total Width: 64 bits
	Data Width: 64 bits
	Size: 32 GB
	Form Factor: SODIMM
	Set: None
	Locator: ChannelB-DIMM0
	Bank Locator: BANK 2
	Type: DDR4
	Type Detail: Synchronous
	Speed: 2667 MT/s
	Manufacturer: Samsung
	Serial Number: --------
	Asset Tag: -----
	Part Number: M471A4G43MB1-CTD    
	Rank: 2
	Configured Memory Speed: 2667 MT/s
	Minimum Voltage: 1.5 V
	Maximum Voltage: 1.5 V
	Configured Voltage: 1.2 V
	Memory Technology: DRAM
	Memory Operating Mode Capability: Volatile memory
	Firmware Version: Not Specified
	Module Manufacturer ID: Bank 1, Hex 0xCE
	Module Product ID: Unknown
	Memory Subsystem Controller Manufacturer ID: Unknown
	Memory Subsystem Controller Product ID: Unknown
	Non-Volatile Size: None
	Volatile Size: 32 GB
	Cache Size: None
	Logical Size: None