Is this a single 28-core CPU? The only other 28 core chips that Intel has are the Xeon platinum 8176 and 8180, which cost $9-$13K and don't clock nearly as high.

Or is this like AMD's Threadripper any EPYC, and they are duct taping together multiple CPUs in a single socket? Eg, 2 x 14 cores CPUS connected with QPI or EMIB ? 4 x 7 cores? I wonder if AMD patented this technique..