the I3 is very fast, like bob said, not as fast as the I7 (I knew what you meant bob :)
but depending on your needs if your going to be doing a lot of tracks a ram upgrade might be favorable.
I think you will be pleasantly surprised though.
I even tested one with a docking station
http://us.toshiba.com/accessory/PA3778U-1PRP what this does is add another monitor so by using the one vga on the laptop this also gives another vga, so in essence you can use 2 monitors and close the laptop.
but this dock does draw power from the laptop, but under the circumstances it ran very well.
this was the I3 second generation.
I think the whole line of the i3-i5 and i7 are great CPU's.
of course the I7 being superior but the I3 is a nice processor and tops a lot of mid grade cpu's out there.
one point in my life I was sold on Intel, until I started testing AMD CPU's
then I realized something, for the price and for what we are using them for in our digital audio machines here.
they are amazing.
AMD makes an 8 core bulldozer.
its a beast.
I use the AMD phenom II black edition 6 core CPU in my custom built computer.
I usually build between 3-5 computers a month, sometimes more, sometimes less.
I can build a entry level daw capable of handling heavy loads with sonar for under 500.00. I wrote a book on computer building and if you ever get the cash and the time I suggest building your own, you can even salvage the old HD out of your old computer, I get that a lot from customers who fried up there old systems.
they want to use it as a second storage unit.(sample library)
I have ten videos that go with the book if your interested you can check them out here:
this is the first one
http://www.youtube.com/watch?v=LFZ7ZrsTl3g