Product : Microsoft, HyperV/2012R2, Free Hyper-V Server with SC
Feature : Max vCPU per VM, VM Config , Hypervisor
Content Owner:  Roman Macek
Summary
128 vCPU
Details
128 vCPU
Maximum number of virtual CPUs configurable for the vm and presented to the guest operating system - supported numbers vary greatly with specific guest OS version, please check!