If you want new computer, first you have to check if your laser software and laser drivers have support for newer windows. We had trouble when upgrading to win7 64 bit because we had to ask special drivers for Golden laser. Trotec had no trouble upgrading
And yes, AI, Corel, what ewer software you use, you must to have much memory you can put in a computer. We have 8 giga rams on main computer for designs. Laptop for Trotec has 3 giga rams and has no trouble running with corel draw, Job control, Adobe illustrator, Mozilla Firefox, Chrome, total commander, Excel, word, skype all opened at the same time Even after 4 years it runs fine.
Trotec Speedy 300
Trotec Speedy 400