Yeha shadows and high details, what setup do you roll with?

Is there any single PC boxers that run 5 clients with full details on all windows? The shadows are realy nice, but they slaughter my system hard. Untill now i have run my main window with max on all exept shadows, and min settings on all slaves. But as i swap windows more and more in pvp and shit i wanna have them as like eachother as i can.

What is the best way to improve fps to have shaows on? You can see my system in my user CP

=)