Are there different sized DIMM's that only fit certain RAMS?

[.Corey.]

I was trying to fit my RAM i bought into my computer (and they both match) yet.. I can't figure out why the RAM won't fit into my DIMM.. >.<

 

[joxley1990]

I once did this..lol, noob days! You might have DDR2 RAM, and a DDR motherboard, or, a DDR2 motherboard, and DDR RAM..

Have you tried putting the RAM in lots of different ways, as in..both ways around?

Take pics of both, and we'll be able to tell you..

And yes, to answer your question, you can get different types of RAM..with different pins and arrangements..