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Even at a quick glance at our performance numbers from our Aida64 testing it is easy to see the difference in performance between the three CPU’s. On every test the difference between the i3-2100 and the i5-2500 is CONSIDERABLY bigger than the small jump in performance to the i7-2600. The most notable of course is the AES (Advanced Encryption Standard) test. Both the i5-2500 and i7-2600 have Intels AES New Instructions that give them a major boost over the i3-2100. If you plan on spending a lot of time encrypting files or zipping up files the i5 and i7 would give you the most noticeable gains.