linux 查内存多大内存频率

free -h

              total        used        free      shared  buff/cache   available
Mem:           15G        3.4G        7.8G        344M        4.3G        11G
Swap:          2G          0B        2G

sudo dmidecode -t memory

# dmidecode 3.2
Getting SMBIOS data from sysfs.
SMBIOS 2.8 present.

Handle 0x000A, DMI type 16, 15 bytes
Physical Memory Array
    Location: System Board Or Motherboard
    Use: System Memory
    Error Correction Type: None
    Maximum Capacity: 16 GB
    Error Information Handle: Not Provided
    Number Of Devices: 4

Handle 0x000B, DMI type 17, 27 bytes
Memory Device
    Array Handle: 0x000A
    Error Information Handle: Not Provided
    Total Width: 64 bits
    Data Width: 64 bits
    Size: 4096 MB
    Form Factor: SODIMM
    Set: None
    Locator: DIMM_A1
    Bank Locator: BANK 0
    Type: DDR3
    Type Detail: Synchronous
    Speed: 1600 MHz
    Manufacturer: 0x80CE
    Serial Number: 0x00000000
    Asset Tag: Unknown
    Part Number: KHX1600C9S3L/4G

sudo lshw -class memory

  *-memory
       description: System Memory
       physical id: 20
       slot: System board or motherboard
       size: 16GiB
     *-bank:0
          description: DIMM DDR3 Synchronous 1600 MHz (0.6 ns)
          product: KHX1600C9S3L/4G
          vendor: Kingston
          physical id: 0
          serial: 00000000
          slot: DIMM_A1
          size: 4GiB
          width: 64 bits
          clock: 1600MHz (0.6ns)
     *-bank:1
          description: DIMM DDR3 Synchronous 1600 MHz (0.6 ns)
          product: KHX1600C9S3L/4G
          vendor: Kingston
          physical id: 1
          serial: 00000000
          slot: DIMM_A2
          size: 4GiB
          width: 64 bits
          clock: 1600MHz (0.6ns)
     ...