Thank you very much all! This is very good information! Very helpfull! Yes it definetly seems like a whole car is too much for the computer I am currently on and another CAD desktop is needed. But no SLI then, but the high end gpus as p6000 and alike should work, as long as its just one? Regarding the jt parts, they where created as several static mesh actors grouped under a scene component. The chip-set i mentioned was one small 56kb part created as one main scene component, and several child scene components with the surfaces as child actors to these. Am i making sense writing like that?
Now i understood you meant the strucutre of the jt file in catia, I cant reach catia unfortuneatly. I just recieve the exported models from teamcenter.