Hello, I'm an avid pc builder and I frequently build editing rigs gaming rigs etc however recently I was asked to build a powerful budget CAD machine. As such the first thing I did was go to arms and build up a specification which was easy as I knew from my little knowledge that CAD hates hyperthreading unless you do some odd whisper command and that an i5 was the right choice. Besides that I have hit a major issue one which when put on 5 different tech forums, they all came back to me with statistics and "proof" backing up their choice - so I decided I'd ask you - the professionals . As such my question to you all today is, should I use a gtx 670 or an Nvidia quadro 600 for an auto cad 2013 pc. From my own knowledge the 670 demolishes the quadro on hardware - infact the quadro 600 is only on pci-e gen 2.0. But the drivers on the quadro make it specialise in autoCad and autocad is built around it! That's why I'm asking you guys which should I use in the build - I'm on a very tight budget so these are the best choices as I know cuda is best for autocad. *Please note this is for a professional architect so it's not some novice setup I'm building this pc to be the best that's why I'm concerned about which one is better for autoCAD. Also if Fermi architecture does beat kelpar and the quadro let me know. As always any input is appreciated and I hope you all have a nice day - Conor.