im now even more confused, ive just got a dell heatsink with a fan in the mail today which came with the 650 SL7Z7 processor ive bought of ebay and i know my processor atm is a 530 LGA 775 but the mounting points on the new heatsink do not line up with the old heatsink mountings points, the new one 4 mountings points looks square but the original 4 mounting points form a rectangle shape
so in short i know the processor is a 530 Prescott SL7J6, LGA 775 but is the heatsink mountings a 478?