DDR2 RAM. Your motherboard support dual channel RAM, so if you
game or do anything intensive, you can make good use of it.
http://www.hardwaresecrets.com/article/133
By the way, if you are using a 32-bit operating system, there's
no point installing more than 4GB of RAM since you won't be able to
utilize the extra amount of RAM installed.
To check...
Right click on Computer (in Start menu) and
select Properties. Or go to Start
> Control Panel and double click on
System.
