There's been some heartache over AMD's hUMA (Heterogeneous Uniform Memory Access) technology thanks to recent comments made by Marc Diana, senior product marketing manager for the chipmaker, at Gamescom 2013 regarding a performance advantage the PS4 would reportedly enjoy over the Xbox One as a result of this feature that Microsoft's console conveniently overlooked.
According to a friendly neighborhood Xbox One developer on Reddit, hUMA essentially makes for coherent and unified memory access between a CPU and GPU, allowing one processor to read and leverage memory from the other exactly as it sees it. This feature adds up to better system performance and certainly makes for a more efficient architecture.
However, the Xbox One developer mentioned earlier doesn't have reason to believe Microsoft missed out on such a feature at all. Perhaps the Xbox One may not have leveraged AMD's hUMA per se, but based on his research, the developer explained that the platform does indeed implement a comparable memory sharing feature of its own. AMD themselves later confirmed that Diana's statements were "inaccurate":
"During a recent Gamescom 2013 interview, an AMD spokesperson made inaccurate statements regarding the details of our semi-custom APU architectures. AMD will not comment on the Microsoft Xbox One and Sony PS4 memory architectures and will not speak for Microsoft, Sony or other AMD customers."
As the new generation of console gaming is upon us, admittedly it's easy to get overly excited over who will really be bringing their A game to the table. Basically the PS4 stands to be plenty powerful thanks to its supercharged PC architecture, but the Xbox One doesn't exactly seem to be shortcharged under the hood either... at least when its comes to this particular implementation of system memory. Well, it's going to have to be about the games at the end of the day!