AMD is developing fast and economical hbm video memory




The American technology, AMD has developed a method to provide the memory bottleneck for video cards the head. The so-called high-bandwidth memory not only faster but also more economical than current memory structures.

The AMD-developed high bandwidth memory technology, known as hbm would be especially suitable for video cards, but should, over time accellerated processing units, or APUs, can be equipped with the memory technology. AMD’s hbm technology, the hunger of graphics processors to memory bandwidth appease; video cards use more and faster memory to render higher resolutions and ditto details on screen. A simple solution for this is an ever wider memory bus. That, however, requires not only becoming more physical memory chips and thus a large area on the PCB, but also increasingly heavier feeds on the cards and rising costs.

With the hbm technology, the memory chips are much closer to the processor, thereby creating wider data buses are also possible. A first version of the technology would be a memory of thousands of bits are possible, where conventional buses 512bit peaks. In order to place the memory chips as close to the graphics processor, use is made ​​of an interposer. That is a kind of circuit board on which the processor and memory are mounted and where very short connections between the memory and the processor walk through. To save even more space, and to allow for higher speeds, the memory is stacked in addition, a technique which, inter alia, in hybrid memory cubes is applied. AMD is building towers of four memory chips high, which are coupled to each other via TSV ‘s. With four studies per stack and four stacks around the processor, the maximum 4GB of memory currently. In the future, which is to be more due to eight or sixteen layers.

In spite of the much wider data bus for the memory is the bandwidth of constructions with HBM-memory in the first version is not much larger than those of existing memory architectures. That is because the memory clock speed is much lower, which in turn benefits the heat. AMD would shortly with all products come in which HBM technology has been incorporated. Whether that will be completely new graphics cards or new versions of existing models is not yet known. Well hbm video cards might be more economical and smaller PCBs and thus enable more compact cards.

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