minimum dedicated cpu

I have a server with two Intel E5620 CPUs. On the gui in summary it shows CPU(s)8 x Intel(R) Xeon(R) CPU E5620 @ 2.40GHz (2 Sockets). When I make containers I am assigning 4 CPUs to each container, and I have about 50 containers. I also have some KVMs, and I assign them 8 CPU cores each. 1-...