The main controversy surrounding yesterday's revelations about the AMD Memory Type HBM was on the subject of the limit in the memory amount to 4 GB in the first generation devices with HBM.
Associates ArsTechnica UK asked for comments from AMD representatives , and they tried to convince the audience that 4 GB of memory type HBM - this is more than enough, if properly dispose this volume. According to AMD representatives , the current graphics card with GDDR5 memory manage the available memory capacity inefficiently and quite a bit of work to optimize the algorithms with a buffer memory. Especially in view of the greatly increased bandwidth. In general, AMD is trying to convince consumers that 4 GB of memory will not be a limiting factor in the performance of graphics cards.
Incidentally, this same resource explains that memory type HBM is well overclocked. At least, the performance of the growth rate will scale well, and significantly raise the voltage that will be required.