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I am thinking about upgrading my laptop's ram.How can I get to know the number of pins on my ram without opening my laptop? I ran this command sudo dmidecode --type memory and got following info:

Handle 0x0019, DMI type 17, 27 bytes
Memory Device
    Array Handle: 0x0017
    Error Information Handle: 0x001A
    Total Width: 64 bits
    Data Width: 64 bits
    Size: 1024 MB
    Form Factor: SODIMM
    Set: None
    Locator: DIMM0
    Bank Locator: BANK 0
    Type: DDR2
    Type Detail: Synchronous
    Speed: 667 MHz
    Manufacturer: AD00000000000000
    Serial Number: 04008104
    Asset Tag: Unknown
    Part Number: 040404040404040404040404040404040404

Can anyone help?

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"SODIMM", "DDR2" and "667 MHz" is all info you need to know to buy RAM. –  Sergey Oct 31 '12 at 22:13

3 Answers 3

up vote 1 down vote accepted

From this prompt, the key pieces of information to look at are:

  • Location: DIMM0
  • Size: 1024MB
  • Form Factor: SODIMM
  • Type: DDR2
  • Speed: 667MHz

The prompt tells you that you have a SODIMM module with a frequency of *667*MHz occupying the first slot in your motherboard. Since the speed is 667MHz, that likely coincides with the maximum support memory clock frequency for your motherboard.

The # of pins in a DDR2 SODIMM module is 200. For questions like this, I always consult with Google. All you have to do is plug in the relevant information (i.e type, form factor).

Note: check how many SODIMM slots are available, and the maximum memory supported by your OS, and motherboard BEFORE you purchase.

Tip: If you're using a 32-bit flavour of *nix, you're going to be limited to 4GB of RAM.

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You nay not be limited to 4GB if your kernel supports PAE. as well as your CPU. –  hexafraction Nov 7 '12 at 12:31

Open terminal and Type.

sudo lshw

dmidecode -q | less 

(Last one No need to root access)

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I don't know how to do this in Ubuntu. But you can go to www.crucial.com and enter your computer information and it will tell you.

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