Ever since AMD launched the Socket A platform in the spring of 2000, its been touted as a platform choice that gives customers an open upgrade path months or even years down the road. Given the recent release of AMD’s 2800+ and its increased FSB, we’ve decided to take a look at the major Socket A chipsets that’ve been released since the launch of the original Thunderbird, and what CPU’s they officially (and unofficially) may support.