Although some Intel’s signs indicate compatibility Between Intel’s upcoming Alder Lake and Raptor Lake processor platforms, the evidence is now overwhelming. According to documents submitted to the Industry Standards Committee SATA-IO, Intel’s upcoming 600 series chipset will support both Alder Lake and Raptor Lake processors.
Last month, Intel’s contractor submitted the company’s upcoming “Alder-Raptor Lake PCH-S SATA controller” compatibility test results for SATA interface (by @Komachi_Ensaka), an organization that oversees and supports the SATA specification. This document covers Intel’s Platform Controller Hub (PCH), with 7AB0, 7ACB, 7A30, and 7A4B device IDs, which may be the company’s 600 series chipsets for desktop and laptop computers.
The name of the controller confirms that Alder Lake and Raptor Lake CPUs can use the same chipset, in this case Intel’s 600 series PCH. At the same time, compatibility with the chipset does not automatically mean the direct compatibility of any Raptor Lake CPU with any Intel 600 series motherboard, because there are other considerations.
Intel’s Alder Lake is the company’s first hybrid processor for mainstream PCs. The CPU will be packaged in LGA1700 and integrate up to 8 high-performance Golden Cove cores and up to 8 energy-saving Gracemont cores. These chips will also support DDR5 memory and PCIe 5.0 interfaces. Intel’s processor codenamed Raptor Lake will replace Alder Lake sometime in 2022 and will have higher performance. At the same time, the exact difference between the Alder Lake and Raptor Lake platforms is unclear.
There are unconfirmed rumors that Intel’s 600 series chipset itself will not bring PCIe 5.0 connections, but will continue to support PCIe 4.0. However, since Alder Lake CPUs will support PCIe 5.0, the platform will bring this technology to the market. Therefore, if the rumors about the lack of PCIe 5.0 support for Intel’s 600 series chipsets are correct, then support for PCIe 5.0 will be a natural improvement of the Raptor Lake 700 series chipsets. But of course, this is speculation.
Before shipping any platform or product, Intel must ensure its compatibility and/or compliance with various industry standards, and fill out the applicable documents with the appropriate standard setting agency. SATA-IO is such an organization. Usually, such organizations publish information about compatibility and compliance test results on their websites, so that hardware manufacturers can ensure the compatibility of their products with products made by other companies. Therefore, organizations such as SATA-IO, PCI-SIG, and USB-IO will inevitably leak detailed information about unreleased products.