https://www.servethehome.com/intel-stratix-10-adds-upi-and-pcie-gen4-readying-for-cxl/
Intel Stratix 10 Adds UPI and PCIe Gen4 Readying for CXL
Oct 3, 2019 - The Intel Stratix 10 adds UPI for cache coherent connectivity with Xeon CPUs along with PCIe Gen4. Intel also hints at an Agilex with CLX and PCIe Gen5
stratix 10inteladdsupi