Evo još malo i to jako zanimljivo:
http://www.anandtech.com/video/showdoc.aspx?i=2527
"The 90nm R520 components will come in three flavors as we mentioned earlier, all with the X1800 Radeon moniker. The available marketing information claims that the GPU uses an "ultra-threaded quad-core 3D architecture" and a "512-bit ring bus" memory controller. There's definitely some marketing hyperbole going on there, but let's get into the details."
Obratite pažnju na "512-bit ring bus" memory controller, o tome se laprda već duže vrijema na ATI podforumima i špekulira da li je to još jedna ATI-jeva markentiška provala ili će ipak nečemu poslužiti
Više ovo prvo nego drugo
"The 512-bit internal ring bus actually excites us the most; Cell's Elemental Interface Bus (EIB) uses a 16-byte wide quad ring bus, capable of transferring 16-bytes per cycle to the various SPEs. R520's ring bus would actually be four times wider than the bus found on Cell; though this implementation is in R520's memory controller rather than the PPE-to-SPE interface."
Uostalom, članak je zanimljiv i vrijedi ga pročitati ako vas takve stvari zanimaju.