what is Hyperthred ratio?

Hi,

In layman terms, what does hyperthread ratio mean? How is it used/useful in sql server ?

Books online says, It is the Ratio of the number of logical and physical processors.

I have executed one of Glenn Berry's DMV query on my laptop and gives me the below output.

SELECT cpu_count AS [Logical CPU Count],
hyperthread_ratio AS [Hyperthread Ratio],
cpu_count/hyperthread_ratio AS [Physical CPU Count],
physical_memory_in_bytes/1048576 AS [Physical Memory (MB)], sqlserver_start_time
FROM sys.dm_os_sys_info WITH (NOLOCK) OPTION (RECOMPILE);

Logical CPU Count    Hyperthread Ratio    Physical CPU Count    Physical Memory (MB)    sqlserver_start_time
2            2                1        4086            2014-07-22 16:24:47.377

Thanks in advance.