It’s no secret that AMD will bring the tradition of its processors to its graphics chips. These will therefore no longer consist of a single chip to start using several, called chiplets. Well, the latest leaks regarding the next generation of graphics cards, based on RDNA 3, revealed something we didn’t know. A secret chip in the RX 7000. What could it be?
It’s no secret that some models of the RX 7000 will be making the jump to a chiplet configuration at this point, and it’s something we’ve known for a long time. Not only because of the continuous rumors popping up, but also because of a series of patents that AMD has added to its portfolio over the past year.
Well, at the moment the information we have is that all graphics cards under RDNA 3 architecture with a multi-chip configuration will use two different types of chips. On the one hand, the so-called GCD which would be the core where the graphics cores would be located and would be analogous to the CCD of the Ryzen. On the other hand, the MCDs, responsible for accessing the VRAM and housing the Infinity Cache. The news of the next generation of AMD graphics cards? Well, it seems there is a secret chip in the RX 7000.
The secret chip of the RX 7000, what is it and what is it for?
The latest rumors about the next generation of AMD graphics cards, which will come to compete with NVIDIA’s RTX 40 and in theory also Intel’s ARC Battlemage. They couldn’t be more confusing and there is known to be a secret chip in the RX 7000, at least one of the configurations.
may be
31=
two 5 nm GCDs
four 6nm MCDs
an interconnected controller
7 chips in total— Greymon55 (@greymon55) April 11, 2022
Well, the RX 7000’s secret chip is apparently in charge of interconnecting the rest of the chiplets. It would therefore function as a hub responsible for communication between the different elements. This means that the RX 7000 would be what we call a NoC or network on chip. Type of configuration in which the central element functions as a router of a local network.
And what could house the RX 7000’s secret chip? Well, logically, to the GPU command processor, as well as access through the DMA unit and through the PCI Express port to lists of commands that the CPU writes to system RAM that tell the GPU what to do. . It is also said that the new command processor could have improvements and optimizations for Ray Tracing.
Its presence would exclude the operation of symmetric GPUs, although subordinate, to a certain AMD patent. In it, each of the chiplets is a full graphics chip, and the second works subordinate to the first. In the new configuration we would be facing a large graphics chip, but divided into several smaller chips to facilitate its manufacture and not be limited in terms of possible configurations.
