Can SQL 2012 Standard make use of > 4 vCPUs?

Currently using SQL Server 2012 Standard edition on a Hyper-V hosted VM running Windows Server 2012 R2.
The VM has 4 vCPUs assigned.
Have been informed by the SQL DBAs that to increase performance we would need to increase the number of vCPUs and consequently upgrade the version of SQL from Standard to Datacenter to make use of them.

Is this accurate?
My confusion comes in that this is a virtual machine and how the OS and also SQL sees and utilizes the CPUs.

Additional, and perhaps useful, information:

The physical host has (2) x 10 Core CPUS
The NUMA configuration in the VM is:
Processors: 4
NUMA nodes: 1
Sockets: 1
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IvanSystem EngineerCommented:

it says here that limit of SQL 2012 Standard is "Limited to lesser of 4 Sockets or 16 cores". It does not matter if it is VM or physical machine.
In other words your DB is right.



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KThraceAuthor Commented:
I think you're right, and that the DBA is right, but I think the key here is:

"In a virtualized environment, the compute capacity limit is based on the number of logical processors – not cores, because the processor architecture is not visible to the guest applications."

Thanks for the link, it helped!
KThraceAuthor Commented:
Virtualized environments use the logical processors as the count toward the limit.
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