Hi, new here as you may notice.

I am wondering if there is a motherboard in a fairly good (post-2001 preferably) computer that is 5" x 7" or smaller (there is very little give here, about 1/8 of an inch at most). The reason I put this here is because it is most likely to be a laptop, even the B&W G3 is bigger, and I need to know the size for a special case. So, anyone have any ideas?