Extreamly long reload times

I have just been given a new workstation that i thought would cure all my problems, right, and I am still having  extreamly long rebuild times with some of my models so I thought I would ask your opinion on our machines. Maybe we are overlooking something.

SW 2010 sp4

Dell workstation running windows 7 pro

Xeon CPU X5650 with 2 2.67 GHz processors

24 GB RAM

Nvida Quadro 5000 card with 14592 MB

I have an assembly with about 10 configurations and maybe 1500 parts. As I typed this message I was switching from one configuration with several items suppressed to the default with nothing suppressed and it took aaround 7 min. for the model to regenerate. Seems very slow to me. Is there something I should look at? I do have this assembly speedpaked for when it goes into the next assembly up and that helps but sometimes we need the full model.

TIA

SolidworksAdministration