Here's my thinking:
Count the total submissions from all chips in the architecture. With the points, award them for the specific chip. By this I mean combining all ~30K submissions for the architecture (i7 900/W35xx series) but awarding points based on how the 920/W3520s compare with eachother and so forth.
That way, my W3520 would get me 27th for the 920/W3520 category and would give about 22 points since it's a 'popular category,' having ~30K submissions.
EDIT: I also mean to include identical chips in each category. The W35xx Xeons are the same chips with a different name and a slightly higher price tag. They have no multiplier advantage nor an architecture advantage. I'm not sure if I made my position clear on that.