Originally Posted by frankcastle1975
Is there a diff between 32 nm and 22 nm?
Yes, but not one you should worry about. As a theoretical matter, shrinking the die size means shorter circuit traces, higher speeds, lower power, lower heat, and a higher number of transisitors in a smaller size, meaning (once manufacturing settles down) higher yield per wafer which means lower manufacturing costs.
But as a user, it means little or nothing by itself. It allows Intel to produce faster lower power chips, but as a user you should be paying attention to the specs, not the die size, and if a 32nm chip you're looking at is faster or cheaper than a 22nm chip you're considering, then it's faster or cheaper, and really the particular manufacturing process is essentially irrelevant to you.
Shrinking the circuitry is one way that Intel increases speeds and decreases costs. Often because of foundry advances a new series of chips can be released using a smaller die size but essentially the identical design and layout as previous chips and will provide somewhat better performance then their predecessors simply because the feature size is smaller (and thus the electrical circuitry is microscopically shorter). Other times Intel updates moderately the chip layout. Then periodically, but less frequently, Intel will do a total redesign of the architecture.
Ivy Bridge not only went to a smaller 22nm die size, but also introduced a brand new three-dimensional transistor layout in their foundry process. The basic chip architecture is not significantly changed from Sandy, but the manufacturing changes produced higher speeds. The next round of chips - Haswell - will introduce a new architecture that will replace the "Core" architecture they've been using for a while.
Basically, you should pay attention to how the various chips perform and how much they cost, and really don't need to worry about the foundry process used to produce them.
BTW, the "P" processors do not have integrated graphics. Personally, I don't think they're they're usually a very good value, and you can typically find the equivalent "standard" Sandy Bridge cpu for the same price or less.