types of laptop ram | 4 kinds of ram

 The type of laptop ram recently has 4 kinds of ram, here the explenation
1. DDR RAM
DDR RAM Has three variant for speeds and configuration DDR226 PC2100, DDR333 PC2700 and DDR400 PC3200.  commonly that used for laptops Celeron M, Older Centrino or AMD chips used 200-PIN DDR333 RAM.

2. DDR2 RAM
DDR2 Is more faster than DDR RAM. particulary on physical of DDR2 RAM.  DDR2 RAM speed is  :  DDR2-400 PC3200, and DDR2-533

3. DDR3 RAM
If you ask me about the speed of DDR3 RAM, sure more faster than DDR2 RAM commonly at speeds of 800 MHz to 1.6 GHz.

4. 172 PIN DDR Micro DIMM
this ram commonly used for netbook pc, specialy for the Sony Vaio series use DDR2 RAM up to 1.6 GHz speed.