You also need a power supply, RAM, and an optical drive. Make sure Visio and autoCAD both are designed for SMP (another name for using multiple cores) before committing to a CPU. If those programs only take advantage of two cores, then the CPU you have chosen will work nicely. But, if they take advantage of four cores, then you will get better performance with a quad core CPU. You may want to go for the Intel Core i5-750 Lynnfield 2.66GHz
if this is the case. Note that the i5's use dual channel memory, not triple channel like the i7's. This means you will be limited in the number of RAM slots your motherboard has and, as such, the amount of RAM you can install. You also need a socket LGA 1156 motherboard to take the CPU. Good brands to consider are ASRock, eVGA, XFX, Gigabyte, MSI, and Asus. If you decide to get an i7 CPU, those CPU's will not work in an LGA 1156 motherboard since they use LGA 1366. I suggest Windows 7 64-bit over Vista as it runs better and doesn't use as many resources.
Edited by DJBPace07, 24 January 2010 - 11:02 PM.