To check what RAM memory type yo have installed (and also see other useful information about your system), do a
sudo dmidecode
Depending on the version of dmidecode you have installed and the hardware configuration you have, each hardware device will have a certain type number assigned t it. On my machine, the RAM has type 6. So to see what RAM type and speed you have, do a
sudo dmidecode –type 6
and the output will be something like
# dmidecode 2.9
SMBIOS 2.3 present.
Handle 0x0008, DMI type 6, 12 bytes
Memory Module Information
Socket Designation: ROW-0
Bank Connections: 1 0
Current Speed: 800
Type: DIMM SDRAM
Installed Size: 256 MB (Double-bank Connection)
Enabled Size: 256 MB (Double-bank Connection)
Error Status: OK
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Thank you ! very helpful
@Nicu: cu placere. Faina si aplicatia ta – jos palaria. 🙂
Great post, although on my Fedora 11 system I was unable to specify the hardware type by number. Also, dmidecode would not accept the -type argument, it needs to be –type.
Running the following also works:
# dmidecode -t memory
You can replace “memory” with “processor”, “bios”, “cache” etc and it reports back correctly.
Many thanks 🙂
To reduce the mystery, it is useful to look at the manual page via command line entry
‘man dmidecode’
Another reason I’m glad I jumped out of Windoz and straight into Linux…
I like the output of lshw (you can add -c memory to restrict). I think it is more compact and readable.
*-memory
description: System Memory
physical id: 2c
slot: System board or motherboard
size: 768MiB
capacity: 1GiB
*-bank:0
description: SODIMM DDR Synchronous
physical id: 0
slot: DIMM 1
size: 512MiB
width: 64 bits
*-bank:1
description: SODIMM DDR Synchronous
physical id: 1
slot: DIMM 2
size: 256MiB
width: 64 bits
Sometimes you need type 7 instead of 6.
typing “memory” is better indeed.
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Glad you got out of windows? Windows might suck but you still need a screw driver! Is it a PC 2700? pc2100? pc3200? pc5300?
You don’t need a screwdriver in Windows!
In so many ways Linux is not as good as Windows. As much as I hate Windows Linux is not good enough! Or why do you always try to make us use Windows to use Linux! You will need a screwdriver or Windows to ascertain the ram. You will need a screwdriver for the install most likely. There is never enough time. (to do it right the first time) but there is always time to do it over again! When it comes to technology it is all or nothing. Nothing less and definitely nothing more!
Not massive redundancy of half ass solutions that aggravate instead of solve the problem! Once installed, a lot of places will not allow a return your money if the chip comes back bad whether it was that way when you bought it or not. Get screwdriver first! or get screwed later! Unless you like using Windows:-(
command lshw is of same use
sudo dmicode –type 17
gives you type as DDR2 also tell you if only one chip is there
root@home-pc:~# dmidecode –type 17
# dmidecode 2.9
SMBIOS 2.4 present.
Handle 0x002A, DMI type 17, 27 bytes
Memory Device
Array Handle: 0x0029
Error Information Handle: No Error
Total Width: 64 bits
Data Width: 64 bits
Size: 1024 MB
Form Factor: SODIMM
Set: None
Locator: DIMM 1
Bank Locator: Bank 0/1
Type: DDR2
Type Detail: Synchronous
Speed: Unknown
Manufacturer: Not Specified
Serial Number: Not Specified
Asset Tag: Not Specified
Part Number: Not Specified
Handle 0x002B, DMI type 17, 27 bytes
Memory Device
Array Handle: 0x0029
Error Information Handle: No Error
Total Width: Unknown
Data Width: Unknown
Size: No Module Installed
Form Factor: SODIMM
Set: None
Locator: DIMM 2
Bank Locator: Bank 2/3
Type: DDR2
Type Detail: Synchronous
Speed: Unknown
Manufacturer: Not Specified
Serial Number: Not Specified
Asset Tag: Not Specified
Part Number: Not Specified
Thanks!
***************************************************************
@Paul:
Dude, your comment sucks. HOW CAN WINDOW$ EVER BE BETTER THAN LINUX?
Window$ is for the uneducated masses that know very little to nothing about computers.
(e.g – Neck of the woods Hill-billies, lonely Housewives and illiterate hipster kids – the rich segment of those will only use a Mac or iPad ’cause it’s cool).
LINUX IS THE BEST. NO IFS OR BUTS.
***************************************************************
The beauty of Linux is the multitude of choices and options for every task, big or small…
Here is a comprehensive list of memory and other hardware related Terminal commands:
Terminal Commands for Memory (RAM, BIOS-Motherboard, CPU and SYS) and other hardware:
=========================================================================================================
|| Terminal Command || Description ||
|| (Copy-Paste in Terminal) || ||
=========================================================================================================
sudo dmidecode –type 17 || best for RAM only info ||
sudo dmidecode –type 6 || also best for RAM only info ||
sudo dmidecode –type memory | less || also best for RAM only info ||
**************************************** || will give out lots of detailed info ||
sudo dmidecode –type memory || also best for RAM only info ||
sudo lshw -C memory || best for all memory info (RAM, CPU, MOBO, SYS) ||
sudo lshw -short || also best for all memory info (RAM, CPU, MOBO, SYS) ||
**************************************** || plus HDD, SSD, etc ||
sudo lshw -class memory || also best for all memory info (RAM, CPU, MOBO, SYS) ||
sudo dmidecode -t memory || will show memory info-data (RAM, CPU, MOBO, SYS) ||
=========================================================================================================
=========================================================================================================
|| NOT VERY HUMAN FRIENDLY OUTPUTS ||
=========================================================================================================
|| Terminal Command || Description ||
|| (Copy-Paste in Terminal) || ||
=========================================================================================================
sudo lshw || will show a very long list of all hardware ||
cat /proc/meminfo || will show a very long list of memory related data ||
sudo dmidecode || will show a very long list of memory related data ||
=========================================================================================================
P.S. – (RO) Mul?umiri lui “T4L” “Nicu” pentru contribu?ia adus?.