Hi,

Looking at upgrading the CPU in a Dell inspiron 570 desktop.
Plan to keep the case, and will be buying either an I7 4770 or 4771 ( Which is actually better ? )
I was hoping someone could help me out with what size mobo I need for this case? I'm struggling to find out if it is atx or m-atx

Also what is a good quiet fan I can use for this case?

Thanks

Usually Dell motherboards are bespoke Dell sizes but don't quote me on that.

Measure the current mobo and post up the dimensions. It's probably a mATX or there abouts.