We run a vSphere environment and it has been assigned 4 Processors, with this intel chip how many cores does each processor contain?
Each processor can handle 10 cores, here you can check that information Intel® Xeon® Processor E5-2690 v2 (25M Cache, 3.00 GHz) Specifications. However, the use of these cores will depend on the operating system and vSphere. I have found the following link https://kb.vmware.com/selfservice/microsites/search.do?language=en_US&cmd=displayKC&externalId=1010184 this might help you.
If you need more information try posting here Community: VMware vSphere™ | VMware Communities.