Correct Answer: Llano

A brief explanation why…

Riding the wave of success brought by its Athlon 64 and aiming to outplay Intel by offering OEMs a superior integrated graphics solution, AMD acquired ATI Technologies in 2006 for $5.4 billion in cash ($2.5 billion of which was borrowed), expecting to deliver Fusion products by late 2008 or 2009, though they wouldn't actually arrive until 2011 as APUs codenamed Llano. The delay was at least partially due to the companies not integrating successfully, operating as separate units (different buildings and management).

AMD was financially strained a year after the buyout, ending 2007 more than $5 billion in debt, marking its worst year in the previous 15. By 2016, the company was worth a quarter of what it bought ATI for nine years prior.