As our readers probably remember, one of the important topics when discussing the future flagship graphic nucleus AMD Fiji was the question of the volume of video memory. For some time it was believed that the technical implementation and features of the first generation of HBM did not allow the Fiji to install more than 4 GB of video memory (4 assemblies of 1 GB), however, data were subsequently published that the chip connecting substrate was originally created two -channel, andSo, allowing the installation of a larger volume of video memory.
But the chief engineer of the AMD graphics and calculation department Joe Macri believes that the quality is more important than the quantity and the main problem is not in the physical volume of video memory, but in the effectiveness of its use. According to him, the current implementation of the HBM really does not allow to surpass the 4 GB bar, if you use four assemblies, but this is not a problem and it will not become a narrow place — Unless, of course, work is done to optimize the use of video memory. Large volumes of GDDR5 on modern video cards, according to Macri, are historically determined by the need to expand the access tire to increase the bandwidth, but the characteristics of the HBM even the first generation are such that this type of memory does not suffer from a lack of throughput.
A «extra», According to Macri, the volume of video memory is often simple, or is used extremely inefficiently. Moreover, he directly states that 4 GB of local video memory to a modern high -performance solution is more than enough. Based on the words of Joe Macri, it can be assumed that at least one of the versions of Fiji will really receive only 4 GB of video memory, but from his side there was no refinement on this score. Given the predicted price at $ 850, the new AMD flagship, which has only 4 GB of video memory, will look pale against the background of Nvidia GeForce Titan X with its impressive 12 gigabytes on board. It still remains a secret, whether AMD will go to such a step or does it still use Interposer capabilities. What is known for sure — This is that the two -processor version of Fiji VR will really receive 8 GB of video memory.