lol Derek, you'll be desiging your own CPU next.
nm stands for nanometer. The smaller these nodes can be made has obvious advantages. When you consider for example, the mobile phone. The first mobiles phones that were released...
...couldn't exactly fit in your pocket, and was not something that you wanted to take with you wherever you go.
Luckily, technology has improved over the years, and mobile phone technology can be found in something as small as a wrist watch thanks to nano technology. So a 45nm manufacuring process is going to have distinct advantages over 65nm, because it is smaller. If it is smaller, it will require less power, which means it will produce less heat. From a manufacuring point of view, it is also cheaper to make, but the equipment itself is extreemly expensive.
This is about as far as my knowledge in this area extends to.
EDIT, lol, Oh I see, you guys have already beaten me to it.
