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Hyper-V, Hyperthreading, and the implications of per-core licensing [closed]

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http://serverfault.com – Possible Duplicate: Hyper-V and Hyper-threading: On or off? Can you help me with my software licensing issue? I've seen lots of people saying we should turn hyperthreading on on hyper-v hosts, but I've got a dilemma. We're going to be running SQL Server 2012 Enterprise on a 2012 hyper-V cluster. This is licenced per core, and in a virtual hyperthreaded environment I think that core is a thread, not a full core. It's also quite pricey compared to the hardware cost :-) If our SQL Server instances start being CPU-bound, how much extra processing power would we get from 4 non-hypert (HowTos)