they guy who writ this is a . t . w . a . t ., the answer is 240!!!
DDR2 has 240 pins, (DDR1 has 184).
240 pins
ddr1 184 pins ddr2 240 pins ddr3 240 pins there are 240 pins one side 120 pins and other side 120 pins so 120+120 = 240 pins in ddr2 ram. as well as ddr3 has 240 pins and ddr1 has 184 pins only . by Prem verma from www.prem-verma.blogspot.com
There are 240 pins on DDR2 and DDR3.
686 pins
240
240
count them
Here's what I found out for you. The DDR3 has 240 pins just like the DDR2, however, they will not be compatible, you will not be able to put a DDR3 into a DDR2 slot. The knotch on the stick of RAM is in a different location so it will not fit. So a new motherboard made for DDR3 will have to be used. They are currently out on the MAC Lite computers but not sure if Microsoft has any on the market yet. The DDR3 will use 1.5V, which is lower than the DDR2 1.8V.
2.66" 200-pin SO-DIMM contains DDR2 SDRAM. One notch is near the side of the module.
No, the slots for DDR2 RAM is different from the DDR RAM. You cannot use DDR RAM with DDR2 slot.
The difference between the memory of the DDR2 RAM and the DDR3 RAM are the capacity that they can hold the DDR3 RAM is more powerful than the DDR2 RAM.
There are many different desktops that are compatible with the 2GB DDR2 RAM. Some desktops that are compatible with this ram include the Dell 530 and Dell 531S models. You can get more information about DDR2 SDRAM at the Wikipedia.
DDR2 RAM is slightly smaller and has square chips. DDR1 RAM has rectangular chips.