...you want to use it for. Low power is best and cheapest for browsing, online video, and emails. Medium to high power for Microsoft Office and other more intensive softwares. High powered for CAD, large graphical works, gaming.
Can anyone offer some reliable resources?
My main concern is component compatibility... and what is the minimum requirements.

Chowhound
Comic Vine
GameFAQs
GameSpot
Giant Bomb
TechRepublic