Guys we are looking at getting a couple of new systems at work to replace a 4 year old acer workstations. I'm trying to do a bit of research now so that we get some computers this time that can handle the workload. We primarily use Civil 3d and Architecture. I find that now our systems struggle to generate the 3d models in Civil 3D. But of course we are on a budget of something around $1500 CAD.

I'm looking for your help in picking out a processor and a graphics card that can do the job but without going off the deep end in terms of price. I was looking at the ATI Radeon™ HD 5750 Graphics Card that retails for around $220. This is actually on the high end for price so any suggestions for something cheaper that can do as good a job would be appreciated. Processors.... well I'm lost. I bought my personal computer at home about 18 months ago and at the time I new what to buy, but things have changed since then.

Any help on this would be great.

Rob