dmidecode コマンドを使ってハードウエアの情報が取得できます。
“-t memory” と指定すればメモリの情報だけを取得できます。
$ sudo dmidecode -t memory # dmidecode 2.11 # SMBIOS entry point at 0xaaebdf18 SMBIOS 2.7 present. Handle 0x000B, DMI type 16, 23 bytes Physical Memory Array Location: System Board Or Motherboard Use: System Memory Error Correction Type: None Maximum Capacity: 2 GB Error Information Handle: Not Provided Number Of Devices: 2 Handle 0x000C, DMI type 17, 34 bytes Memory Device Array Handle: 0x000B Error Information Handle: Not Provided Total Width: 64 bits Data Width: 64 bits Size: 4096 MB Form Factor: SODIMM Set: None Locator: SODIMM1 Bank Locator: Bank 0 Type: DDR3 Type Detail: Unknown Speed: 1333 MHz Manufacturer: Unknown Serial Number: 00000000 Asset Tag: Unknown Part Number: Not Specified Rank: 1 Configured Clock Speed: 1333 MHz Handle 0x000D, DMI type 17, 34 bytes Memory Device Array Handle: 0x000B Error Information Handle: Not Provided Total Width: 64 bits Data Width: 64 bits Size: 4096 MB Form Factor: SODIMM Set: None Locator: SODIMM2 Bank Locator: Bank 1 Type: DDR3 Type Detail: Unknown Speed: 1333 MHz Manufacturer: Samsung Serial Number: 00ACDF4C Asset Tag: Unknown Part Number: M471B5273DH0-YH9 Rank: 2 Configured Clock Speed: 1333 MHz
