Until recently Fusion was just a codename AMD used to justify buying AMD. The theory was that the CPU and GPU would be fused into one super processing unit and that only AMD would be able to do it thanks to the ATI acquisition.
This vision was crystallised by CTO Phil Hester earlier this year before he went the way of so many AMD execs. He called it the APU - accelerated processing unit - which is heterogeneous in nature and thus can be comprised of a number of different combinations of processor type.
Now, however, it looks like AMD has decided that Fusion pretty much sums up what it's all about and is looking to use the term as liberally as possible. An initial manifestation of this is its latest product launch: the Fusion for Gaming utility.
This is a piece of free software, launched today in beta and available for download from the AMD Game website or the Fusion marketing site, which is a tool to allow even PC novices to optimise their PC for gaming by closing down all superfluous applications.
The main interface is merely a button that plonks itself in the middle of your screen and allows you to toggle between activating it and turning it back off. When Fusion for Gaming is turned off your system reverts to the state it was in before you turned it on.