What memory does my PC take?

[Danno]

The below images show the 3 main types of memory available for a PC, they also show the physical differences.

Please note the below information is just a quick guide that should help identify what memory your motherboard will take. Memory is available in different speeds so you will still have to check what speed memory your motherboard will take or what speed your existing memory is.

DDR RAM
http://forum.novatech.co.uk/files/DDR.jpg
DDR memory has 184pins and it has one cut out slightly off centre.

DDR2 RAM
http://forum.novatech.co.uk/files/DDR2.jpg
DDR2 memory has 240pins and it has one cut out slightly off centre.

RD RAM or Rambus
http://forum.novatech.co.uk/files/RD.jpg
RD RAM has 184pins and two cut out's in the middle. RD Ram is normally has to be installed in indentical pairs.

SD RAM
http://forum.novatech.co.uk/files/SD.jpg
SD RAM has 168pin's and two cut outs, one in the middle and one about 1.5" to the left (or right, depending on how you are looking at it)

More information on memory can be found by clicking the below link.
http://www.kingston.com/tools/umg/default.asp

Memory install guide with picturers.
http://www.kingston.com/tools/umg/umg07.asp

Memory A - Z
http://www.kingston.com/tools/umg/umg10.asp

[JoeDaStudd]

I would also add that Crucial System Scanner (link (http://www.crucial.com/systemscanner/)) is a quick and easy way to find out without downloading or installing any software.
CPUZ (link (http://www.cpuid.com/cpuz.php)) is a very good program which I would recommend to anyone who is looking at upgrading there PC (be it ram, video card or other)