How shall I find out the frequency and type of my current RAM? My OS is Ubuntu 12.04.
lshw command with the
$ sudo lshw -C memory # Some things about firmware and caches *-memory description: System Memory physical id: 13 slot: System board or motherboard size: 8GiB *-bank:0 description: DIMM [empty] product: [Empty] vendor: [Empty] physical id: 0 serial: [Empty] slot: ChannelA-DIMM0 *-bank:1 description: SODIMM DDR3 Synchronous 1600 MHz (0.6 ns) product: M471B5273DH0-CK0 vendor: Samsung physical id: 1 serial: 34A8C7AF slot: ChannelA-DIMM1 size: 4GiB width: 64 bits clock: 1600MHz (0.6ns) # More banks.
As you can see, I'm using DDR3 1600MHz RAM.
Another option is
$ sudo dmidecode -t memory # dmidecode 2.9 SMBIOS 2.5 present. Handle 0x003B, DMI type 16, 15 bytes Physical Memory Array Location: System Board Or Motherboard Use: System Memory Error Correction Type: Multi-bit ECC Maximum Capacity: Unknown Error Information Handle: Not Provided Number Of Devices: 8 Handle 0x003D, DMI type 17, 27 bytes Memory Device Array Handle: 0x003B Error Information Handle: Not Provided Total Width: 72 bits Data Width: 64 bits Size: 4096 MB Form Factor: DIMM Set: None Locator: DIMM_A1 Bank Locator: NODE 0 CHANNEL 0 DIMM 0 Type: Other Type Detail: Synchronous Speed: 1067 MHz (0.9 ns) Manufacturer: 0x0198 Serial Number: 0xB12A9593 Asset Tag: Unknown Part Number: 9965426-037.A00LF # more such devices
This is for a server with ECC memory (as can be seen from the
Error Correction Type field and the difference between
Data Width and
Both tools are dependencies of the
ubuntu-standard package and should be available by default on all Ubuntu systems. There used to be another tool called
hwinfo, which is no longer available for Ubuntu since 13.10.