XEONs use a 100MHz referenced called "BCLK" and scale this up to the different frequencies it needs internally (core, dram, pci, etc.). Typically this info is

XEONs use a 100MHz referenced called "BCLK" and scale this up to the different frequencies it needs internally (core, dram, pci, etc.). Typically this info is found in the datasheet, but only the DC parameters (voltage min/max) etc were found in the first datasheet I found. Timing is so important that often processor manufacturers will have an apnote discussing it in detail, often with suggested parts and circuit layouts. https://www.intel.com/content/www/us/en/products/docs/processors/xeon/2nd-gen-xeon-scalable-datasheet-vol-1.html https://www.intel.com/content/www/us/en/products/docs/proces...