Those machines use the bottom end of the Ivy Bridge mobile i5s - things like the i5-3210M. Don't think you're getting an i5 that would compare to what you'd buy in a decent desktop.
You can see how they compare
here.
The standard RAM on them is 4Gb, too - you'll want more of that for HM2 etc, I suspect.
They apparently support two monitors but via one HDMI connection and one mini DisplayPort.
I don't know for sure whether it'll be up to scratch but my sense is that performance will be pretty disappointing if you think you're getting an "i5 system".
