Advanced Micro Devices' Senior VP and Chief Financial Officer, Thomas Seifert, has decided to leave the AMD three short years after joining the company. As you may recall, Seifert briefly took the reigns of AMD as interim CEO in early 2011, until the firm found a permanent replacement in Rory Read later that year. No word on why Seifert has decided to depart the chipmaker -- other than "to pursue other opportunities" -- but we do know that Devinder Kumar, AMD's current Senior