At the first hank You for answer.
Let to note, You are absolutely right, because we seriously speak about network and software, without numbers any discussion are useless.
I wrote my question based on server we have:
HighLoading mean 500,000 - 1,500,000 requests / second.
Based on any Intel CPU chart above (http://www.cpu-world.com/info/Intel/Intel_Xeon.html), modern server CPU have not small L2 and L3 cache (please sort rows by header label).
Hi cores & frequency mostly popular in PCs for gaming, or in servers for virtualizing where we need frequently switching between environment, not in servers for networking operation.
My question start from understanding that any network routing operations are nothing just working with sequence of TCP/IP packets and rules/tables of routing this packets.
Fastest access to rules and tables are if this rules/tables are in RAM. And sequence of packets are also just stack in RAM.