Are old DDR sticks compatible with new DDR2 motherboards?

[airPA75]

I have been shopping around trying to build a new system. To save a few bucks at the beginning I was hopping to use my old DDR 400 sticks until I can upgrade later. Can I do this?

 

[John_C]

Sorry. DDR Ram has 184 pins. DDR2 RAM has 240 pins. Want to guess the likelihood of successfully getting your 184 memory to work in a 240 pin slot?

 

[Valtiel]

Hmmm, 184 divided by 240 = 0% chance.

 

[Giraffe]

Hmmm, 184 divided by 240 = 0% chance.

well you learn something everyday
I thought 184 divided by 240 = 0.766666667
😛

the only way you can use DDR ram in a new system is if you use the ASROCK 775Dual VSTA Motherboard
it supports DDR, DDR2, AGP and PCIE

the board has its downsides though