The latest Linux kernel patch confirms that the next generation AMD Zen architecture will have an integrated package of 12 CCD chiplets. The current k10temp Linux temperature monitoring driver can only support a maximum of 8 CCDs, each with 8 cores and a maximum of 64 cores. The new driver already supports 12 CCDs. The corresponding product family is AMD Family 19h Models 10h-1Fh, A0h-AFh.
In fact, AMD has previously announced generously that the Zen4 architecture’s Xiaolong processor code-named Genoa will be mass-produced in 2022 and will be manufactured on a 5nm process. It supports DDR5, PCIe 5.0, and up to 96 cores. Naturally, each CCD is still 8 cores.
According to the news, DDR5 memory has twelve channels, the standard frequency is 5200MHz, PCIe 5.0 has 128 single-channel, 160 dual-channel, and the power consumption is 320-400W. Zen4 also has a derivative version of Zen4c, optimized for cloud services, the Xiaolong processor codenamed Bergamo, is also a 5nm process, up to 128 cores.
If each CCD is still 8 cores, then 16 CCDs need to be stacked. In addition, it is said that Zen4 will also derive Zen4D, which will be used with Zen5 in the form of large and small cores and will be launched in 2023.