memory info

# free -h

               total        used        free      shared  buff/cache   available
Mem:            39Gi        23Gi        15Gi       866Mi       1.4Gi        15Gi

# Inxi -mxxx

Memory:
  System RAM: total: 80 GiB available: 39.11 GiB used: 23.94 GiB (61.2%)
  Array-1: capacity: 128 GiB slots: 4 modules: 4 EC: None
    max-module-size: 32 GiB note: est.
  Device-1: DIMM 0 type: DDR4 detail: synchronous unbuffered (unregistered)
    size: 8 GiB speed: 2133 MT/s volts: 1.2 width (bits): data: 64 total: 64
    manufacturer: Corsair part-no: CMK16GX4M2E3200C16 serial: N/A
  Device-2: DIMM 1 type: DDR4 detail: synchronous unbuffered (unregistered)
    size: 32 GiB speed: 2133 MT/s volts: 1.2 width (bits): data: 64 total: 64
    manufacturer: Corsair part-no: CMK64GX4M2E3200C16 serial: N/A
  Device-3: DIMM 0 type: DDR4 detail: synchronous unbuffered (unregistered)
    size: 8 GiB speed: 2133 MT/s volts: 1.2 width (bits): data: 64 total: 64
    manufacturer: Corsair part-no: CMK16GX4M2E3200C16 serial: N/A
  Device-4: DIMM 1 type: DDR4 detail: synchronous unbuffered (unregistered)
    size: 32 GiB speed: 2133 MT/s volts: 1.2 width (bits): data: 64 total: 64
    manufacturer: Corsair part-no: CMK64GX4M2E3200C16 serial: N/A

# dmidecode -t memory

# dmidecode 3.5
Getting SMBIOS data from sysfs.
SMBIOS 3.2.1 present.

Handle 0x000C, DMI type 16, 23 bytes
Physical Memory Array
	Location: System Board Or Motherboard
	Use: System Memory
	Error Correction Type: None
	Maximum Capacity: 128 GB
	Error Information Handle: 0x000B
	Number Of Devices: 4

Handle 0x0013, DMI type 17, 40 bytes
Memory Device
	Array Handle: 0x000C
	Error Information Handle: 0x0012
	Total Width: 64 bits
	Data Width: 64 bits
	Size: 8 GB
	Form Factor: DIMM
	Set: None
	Locator: DIMM 0
	Bank Locator: P0 CHANNEL A
	Type: DDR4
	Type Detail: Synchronous Unbuffered (Unregistered)
	Speed: 2133 MT/s
	Manufacturer: Unknown
	Serial Number: 00000000
	Asset Tag: Not Specified
	Part Number: CMK16GX4M2E3200C16  
	Rank: 1
	Configured Memory Speed: 2133 MT/s
	Minimum Voltage: 1.2 V
	Maximum Voltage: 1.2 V
	Configured Voltage: 1.2 V

Handle 0x0016, DMI type 17, 40 bytes
Memory Device
	Array Handle: 0x000C
	Error Information Handle: 0x0015
	Total Width: 64 bits
	Data Width: 64 bits
	Size: 32 GB
	Form Factor: DIMM
	Set: None
	Locator: DIMM 1
	Bank Locator: P0 CHANNEL A
	Type: DDR4
	Type Detail: Synchronous Unbuffered (Unregistered)
	Speed: 2133 MT/s
	Manufacturer: Unknown
	Serial Number: 00000000
	Asset Tag: Not Specified
	Part Number: CMK64GX4M2E3200C16
	Rank: 2
	Configured Memory Speed: 2133 MT/s
	Minimum Voltage: 1.2 V
	Maximum Voltage: 1.2 V
	Configured Voltage: 1.2 V

Handle 0x0019, DMI type 17, 40 bytes
Memory Device
	Array Handle: 0x000C
	Error Information Handle: 0x0018
	Total Width: 64 bits
	Data Width: 64 bits
	Size: 8 GB
	Form Factor: DIMM
	Set: None
	Locator: DIMM 0
	Bank Locator: P0 CHANNEL B
	Type: DDR4
	Type Detail: Synchronous Unbuffered (Unregistered)
	Speed: 2133 MT/s
	Manufacturer: Unknown
	Serial Number: 00000000
	Asset Tag: Not Specified
	Part Number: CMK16GX4M2E3200C16  
	Rank: 1
	Configured Memory Speed: 2133 MT/s
	Minimum Voltage: 1.2 V
	Maximum Voltage: 1.2 V
	Configured Voltage: 1.2 V

Handle 0x001C, DMI type 17, 40 bytes
Memory Device
	Array Handle: 0x000C
	Error Information Handle: 0x001B
	Total Width: 64 bits
	Data Width: 64 bits
	Size: 32 GB
	Form Factor: DIMM
	Set: None
	Locator: DIMM 1
	Bank Locator: P0 CHANNEL B
	Type: DDR4
	Type Detail: Synchronous Unbuffered (Unregistered)
	Speed: 2133 MT/s
	Manufacturer: Unknown
	Serial Number: 00000000
	Asset Tag: Not Specified
	Part Number: CMK64GX4M2E3200C16
	Rank: 2
	Configured Memory Speed: 2133 MT/s
	Minimum Voltage: 1.2 V
	Maximum Voltage: 1.2 V
	Configured Voltage: 1.2 V