The IOD of the Ryzen 7000 processor is pictured
Although the CCD photos of the AMD Zen 4 architecture processor have been publicly available for some time, the IOD was only shown in a rough block diagram at the time of its release. The IOD used in the EPYC 7004 for servers has been available in infrared photos for some time. However, at ISSCC 2023, AMD finally unveiled the IOD photos of the Ryzen 7000 processor.
@Locuza_ has annotated this photo, showing that the IOD has only two GMI3 interfaces for connecting to the CCD. Therefore, previous rumors about supporting three CCDs are impossible. The IOD has two sets of 240-bit DDR5 memory interfaces, and a single DDR5 memory is 232-bit, with the extra 8 bits required for ECC. This means that the Ryzen 7000 processor supports ECC memory, but whether it is supported by the motherboard manufacturers remains to be seen.
In addition, AMD has integrated the integrated graphics into the IOD. Although only two sets of CU are used, when the peripheral components, video codec, and video output are included, it still occupies a considerable amount of chip space, which is basically equivalent to one-third of the chip area.
The IOD chip area of the Ryzen 7000 processor is 12.49.5mm, with approximately 3.37 billion transistors. The IOD used in the EPYC 7004 processor also uses the TSMC 6nm process, but because it needs to connect 12 CCDs and provide a much larger number of PCI-E and memory channels, its chip area is 24.815.6mm, with 11 billion transistors.
