[Ducky]

Over the past year I have been slowly upgrading all the parts in my PC, trying to keep it up to date with the times/modern games. I started off with 0 knowledge on PC hardware, and still have a fairly limited knowledge.
It's at the point now where i think a CPU and motherboard change are needed, but i have no clue about either..

For my CPU i want to upgrade from my Intel Core i5 650 @ 3.2GHz, up to an i& of some description. What i'm unclear on in this regard is the different between the different models of i7, and if the additional x money for a higher end one is actually worth it.

as for the motherboard.. i don't even know what mine is. It's from some crappy old Dell. I think the board goes by Dell Studio XPS 8100 G3HR7

any help and recommendations would be greatly appreciated