I have SP3 i5/256gb. have and run AutoCAD and Maya without problems. Not going to win awards for rendering speeds, but it works just fine. Its been a few months since I've ran AutoCAD last, but since then I've been running vm's and PLC software 10 hours a day without a hitch. Just Monday I started using my micro sd for vm storage, running Samsung pro micro, SanDisk extreme also works well. Anything slower than those class chips doesnt work nicely. This saves the SSD wear.
if you have any in depth or more technical questions feel free to ask.
Btw, the 3k'ish screen resolution on sp3 kicks butt in AutoCAD/Sony Vegas pro 3