AMD Raphael & Rembrandt: More PCIe Gen4 for CPU/APU and 600 chipset

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The gigabyte leak provides further information on AMD's processors. The Raphael desktop CPU for the AM5 socket (LGA 1718) and the Rembrandt APU also cover a small part and show more PCIe 4.0 lanes and the new 600 chipset, which is intended to take a step forward.

Note: In the data leaked by Gigabyte there is still some small, not publicly known information. ComputerBase also has access to these files, but will not publish all information from them, as they are classified as “confidential” by AMD.

If this information However, if it is distributed elsewhere, the editors will try to classify it accordingly.

Today TechPowerUp has distributed relevant information, including a block diagram of the upcoming AM5 solution and the new 600 chipset reveal – this name is confirmed in other files of the gigabyte leak.

The rumor mill had already announced some of the details about the platform, the Raphael CPU but also the Rembrandt APU will of course support DDR5, but not PCI Express of the latest Gen5, as Alder Lake will officially introduce at Intel in a few weeks. Here, AMD remains with Gen4, but now offers up to 28 lanes per CPU. The new chipset will also be upgraded, with native PCIe 4.0 for SSDs that are connected via it, should be introduced.

AMD Socket AM5 with new CPUs/APUs and chipsets (Image: TechPowerUp)

The Motherboard Design Guide Rev. 0.70 from August 2021 from AMD provides further information. Accordingly, not all supported models will offer 28 PCIe lanes, some will only offer 20 lanes. There will be a separation here again for the respective target market. APUs currently do not offer PCIe 4.0 lanes for graphics cards, they are also confirmed in the guide as an area of ​​application for the AM5 socket, various display controllers and interfaces in the block diagram underpin this.

Similar differences will also apply to USB, as an example USB4 is mentioned via a discrete additional controller, which, according to the current guides, will not be available everywhere. There are currently three CPU families in the lists: Family 19h Models 40h-4Fh, Family 19h Models 60h-6Fh and Family 19h Models 70h-7Fh.

At the end The overall package for the AM5 socket is clearly evolving. At the top of the processors, these innovations are significantly less than in the mainstream area, for APUs the step is likely to be larger. For Raphael as the CPU, the most important innovations in the second half of 2022 are ultimately the Zen 4 cores and DDR5 support with a TDP increased to up to 170 watts.