SQL Server 2012 Standard and hyperthreading core count

Question

I have 2 Intel E5-2640 v2 processors for my SQL Server 2012 Standard server. Each processor has 8 cores and has hyper threading so it has 16 logical cores. Will SQL standard be able to use hyper threading? Since it has a 16 core limit, does it see hyper
threading as an extra core or will it only look at the 8 cores each processor has?

Answer 1

Ignoring licencing, Standard version can only use up to 16 cores. In my case I have 16 cores but 32 logical cores. Will the Standard edition only use the first 16 logical processors or will it use all logical cores since I have 16 physical cores
that just happens to have hyper threading?
As per my understanding whatever is less than 16, Physical core or logical core  will use that .But I am not sure best answer would be from Microsoft.
Reading there below statement .
'When hyper-threading is enabled, the Basic Input Output System (BIOS) uses a logical to physical CPU ratio. Current implementations are using 2:1 ratios. This means that there are two (2) logical CPUs for each physical CPU. These ratios may change in the
future; however, Microsoft SQL Server 2000 Service Pack 3 (SP3) and later versions have additional licensing code that adjusts the licensing restrictions to handle the ratio. For example,
if the SQL Server product code that you have installed permits a 4 CPU license at a 2:1 ratio, the SQL Server 2000 SP3 build and later builds adjust and let you use 8 CPUs.
So it says if you have license for 4 CPU but if it is hyperthreaded it can use 8.But again if number goes over 16 for standard edition I guess it would not use above 16.So in your case Enabling hyperthreading would have no use.
NOTE: This is complex discussion and correct answer would be what Microsoft says :)
PS: Please read link I have posted it is applicable to 2012 as well
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