Which projects should you crunch? Standard office Desktop

If the Desktop is over 5 years old you may want to refer to my previous post, but some parts of this post might be useful.  Also by Standard office desktop, I do not mean a gaming rig, i.e. something that likely contains one if not more high quality GPU's, that has added features up the wazoo, and potentially has certain items overclocked.  I mean something you'd likely find in your office ( if