Intel is still behind when it comes to the performance of integrated graphics units. AMD has to offer with Llano APU and soon Trinity very strong competition. Intel wants to reduce the gap with Haswell, or even convert to its own advantage, but need to go new ways. The "shared memory" system with the help of the system memory is a bottleneck.
Haswell, the next-generation CPU from Intel in the mid-range processors could have built a buffer in the form of a 4-level caches. Thus far the conjecture. It appears, however, in the opinion of Semiaccurate Rather, as Intel has a large graphic
in front on a dedicated core chip that is mounted on an interposer along with the processor in a package. AMD had been in the chipset 780G, 790GX and 890GX DDR3 sideport used a technique called, which represented the principle according to a similar function and mode of action, but was strongly discouraged by the communication channels on the mainboard.
64 megabytes seem not to be large enough for the whole store textures as we know of dedicated graphics cards, but it may be enough to make the necessary and stagnant image content quickly to make available. By the way, by shutting off the current memory buses could be saved if the screen content will remain the same and comes from the frame buffer. A name should already have this graphics core. Semiaccurate speaks of Crystal Well.