freakishflyer50

Thanks for the info, I will open the computer this weekend and have a look at sizes etc. That chart on the "bench marks" does open your eyes, great help.

thanks for all the advice. I will have a look at the GTX cards. Just one other question does the mother board play a part in this , bus speeds etc? Its a Cleveland GL-8.

At present I have a i7 3.4ghz processor , GeForce GT 420 graphics card. 16gb ram and find that my computer cannot cope with the software, it stutters and takes and age just to turn the 3D drawing around , even creating the 3D house takes an age. I'm thinking of changing my graphics card to a NVidia Quadro K4000 designed for 3D modelling.  I am also using Turbo CAD Pro, Would this card be good enough for the job?