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在linux查看内存型号的命令

$ sudo dmidecode -t memory

执行后显示如下：

# dmidecode 3.0
Getting SMBIOS data from sysfs.
SMBIOS 3.0.0 present.

Handle 0x003D, DMI type 16, 23 bytes
Physical Memory Array
	Location: System Board Or Motherboard
	Use: System Memory
	Error Correction Type: None
	Maximum Capacity: 64 GB
	Error Information Handle: Not Provided
	Number Of Devices: 4

Handle 0x003E, DMI type 17, 40 bytes
Memory Device
	Array Handle: 0x003D
	Error Information Handle: Not Provided
	Total Width: Unknown
	Data Width: Unknown
	Size: No Module Installed
	Form Factor: Unknown
	Set: None
	Locator: ChannelA-DIMM0
	Bank Locator: BANK 0
	Type: Unknown
	Type Detail: None
	Speed: Unknown
	Manufacturer: Not Specified
	Serial Number: Not Specified
	Asset Tag: Not Specified
	Part Number: Not Specified
	Rank: Unknown
	Configured Clock Speed: Unknown
	Minimum Voltage: Unknown
	Maximum Voltage: Unknown
	Configured Voltage: Unknown

Handle 0x003F, DMI type 17, 40 bytes
Memory Device
	Array Handle: 0x003D
	Error Information Handle: Not Provided
	Total Width: Unknown
	Data Width: Unknown
	Size: No Module Installed
	Form Factor: Unknown
	Set: None
	Locator: ChannelA-DIMM1
	Bank Locator: BANK 1
	Type: Unknown
	Type Detail: None
	Speed: Unknown
	Manufacturer: Not Specified
	Serial Number: Not Specified
	Asset Tag: Not Specified
	Part Number: Not Specified
	Rank: Unknown
	Configured Clock Speed: Unknown
	Minimum Voltage: Unknown
	Maximum Voltage: Unknown
	Configured Voltage: Unknown

Handle 0x0040, DMI type 17, 40 bytes
Memory Device
	Array Handle: 0x003D
	Error Information Handle: Not Provided
	Total Width: 64 bits
	Data Width: 64 bits
	Size: 4096 MB
	Form Factor: DIMM
	Set: None
	Locator: ChannelB-DIMM0
	Bank Locator: BANK 2
	Type: DDR4
	Type Detail: Synchronous
	Speed: 2133 MHz
	Manufacturer: Kingston
	Serial Number: 03189BB9
	Asset Tag: 9876543210
	Part Number: 9905665-017.A00G    
	Rank: 1
	Configured Clock Speed: 2133 MHz
	Minimum Voltage: 1.2 V
	Maximum Voltage: 1.2 V
	Configured Voltage: 1.2 V

Handle 0x0041, DMI type 17, 40 bytes
Memory Device
	Array Handle: 0x003D
	Error Information Handle: Not Provided
	Total Width: Unknown
	Data Width: Unknown
	Size: No Module Installed
	Form Factor: Unknown
	Set: None
	Locator: ChannelB-DIMM1
	Bank Locator: BANK 3
	Type: Unknown
	Type Detail: None
	Speed: Unknown
	Manufacturer: Not Specified
	Serial Number: Not Specified
	Asset Tag: Not Specified
	Part Number: Not Specified
	Rank: Unknown
	Configured Clock Speed: Unknown
	Minimum Voltage: Unknown
	Maximum Voltage: Unknown
	Configured Voltage: Unknown

从中可以看出内存只插了一个，型号为金士顿 DDR4 2133MHz  4G

Type: DDR4
	Type Detail: Synchronous
	Speed: 2133 MHz
	Manufacturer: Kingston