The table below explains the differences between Core i3-2120, the Core i3-2100, and the older Core i3-540.
As we can see, from technical perspective, the only thing that sets the Core i3-2120 from its immediate predecessor is its higher clockspeed. Does the 200-MHz increase really make a difference in real-life scenarios? We’ll answer that question in our benchmark section later on. Meanwhile, here are some CPU-Z readings of the new processor.