I have 2 old laptops - an IBM ThinkPad Z61t and a Dell Latitude E6500. The ThinkPad has an Intel Centrino Duo and the Latitude has an Intel Centrino 2. The Latitude has significantly better performance not due to RAM, so I'm wondering if the processors are different, but I thought they were the same. The question is: are they different, and are they compatible?
Pictures of the stickers on the laptops below.