Intel’s upcoming 600 series chipset, built for 12th Gen Core “Alder Lake-S” processors, won’t support PCIe 5.0. This is according to a PCI-SIG certification spotted by leaker KOMACHI_ENSAKA, which revealed that the chipset is limited to PCIe 4.0 speeds at 16 GT/s. The implication is that Alder Lake’s PCIe 5.0 support will be limited to their processors’ CPU lanes.
[PCI-SIG] Intel ADL-S PCH. pic.twitter.com/atGWJbZc2F— 遠坂小町@Komachi (@KOMACHI_ENSAKA) May 31, 2021
[…] with Intel supporting Gen 5.0 only on the CPU, motherboard prices may not be as expensive as they could be. It’s much easier for motherboard manufacturers to build boards around one or two Gen 5.0 PCI-e slots than to build the entire board to support Gen 5.0.