MAC MINI with i7 quad or dual core?

I am tempted to buy one of the new Mac Minis, but I am not sure which CPU will be preferable for use with Notion 3 -- 2.7 GHz dual core (i7-2620M) or 2.0 GHz quad core (i7-2635QM). I combine Notion instruments with selected patches from VSL SE plus, EWQL SO or Miroslav. Occasionally I will be using Logic. I intend to choose the 256 GB SSD + 750 GB HD @7200 RPM option and load the sweet little thing with 8GB RAM. Sorry if my question is off topic in this forum.
Best,
Otto
Best,
Otto