i3 vs i5

[Fedemac]

Well, yesterday I bought an iMac 21.5 "i5 3.60GHz, 4GB RAM, 1TB HDD ...
I wanted to know the performance difference between the 3.06GHz i3, 3.20 GHz i3 and the 3.60GHz i5...
I've seen a couple of benchmarks, but I don't know if I made a good deal or not, well, the price difference between processors and models was not a big problem, and had planned to have it a couple of years , as usual...
I come from a PC with Q6700 @ 3.00GHz, 4GB RAM, 4870 1GB GDDR5...
Will I feel the difference in hardware?
Nor do I make an intensive use, except for the games, but I have this PC, so I do not care much games on the iMac.
I mostly use the Internet, Photoshop, iPhoto, some video editing (home videos) and some games, but nothing too demanding ...
Obviously I bought it for the future, I preferred quad, but it isn't in the 21.5" version. :s

And sorry for my bad english, I try my best :|

 

[Hellhammer]

For your usage, the base iMac would have been just fine. The difference is negligible unless you do something CPU intensive and even then, it's not worth it unless your time is limited (e.g. if it's use for work).