Quote - > Quote - srry, but your new system is 2core with multihreading ,not a quad core.

See:

http://ark.intel.com/Product.aspx?id=42915

look in the list

number of cores = 4
hyperthreading = no

You're probably thinking of the i3 or something. He's got an i5.

Uuups , ghonma you are right, i picked the wrong column at intels specifications site.
so you have 4 cores @ 2.66 Ghz, and this should make markable a difference to your old system.
If overclocking at 3.2 Ghz is workig for you this should give another big boost in rendertimes.
On the other side from 2.66 to 3.2 is a very big step. I really dont know about this
intel turbo-boost feature that says ... up to 3.2 Ghz possible.