What are you doing for redundancy/backups? CAD I assume means work, so you will want to ensure it isn't lost....
AutoCAD is great, once you've learnt how to use it.
my ancient rig runs solidworks
fine, even with reasonably complex models, and solidworks can be picked up almost entirely by intuition too. It ran fine even back when I was using a 6600gt so rendering isn't going to be a biggie lol
Pro-E also runs fine.... well as fine as Pro-E can be said to be be running (gawd I hate the guys who made that and forced upon our university)
Autocad, well depends on the packages, but they also run well and offer free versions to all students. they also have endless teaching aids etc etc.
Obviously moar power is all good, but you'd be surprised how little you actually need.
UofA is the only place I know that teaches ProE to the exclusion of all else - PTC offers nil support nor even reasonable licening for students. Everywhere else teaches Autocad, Solidworks, and anything else worth using, yet for some reason not ProE - gee i wonder why
EDIT: might qualify what i mean by ancient; AMD athlon64 X2 4600+ (clocked at 2.4GHz but I've gotten her to 3GHz no sweat) and associated technology from 2007
EDITEDIT: and set up a separate install if you intend on installing visual studio. It's just easier that way.
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