If you are using licensed version
of your hypervisor and you deploy ADSP using .ova file there is VM configuration stored within the template.
If you examine .ovf file it says that this is VMX-07 type of virtual machine which has certain limitations
This is to ensure backwards compatibility with older hypervisors and may differ in newer .ova templates.
If you need to enable more than 8 CPUs for your virtual ADSP appliance, please contact technical support.