SQL Server supports the specified number of processor sockets multiplied by the number of logical CPUs in each socket. For example, the following is considered a single processor for purposes of this table:

• A single-core, hyper-threaded processor with 2 logical CPUs per socket.
  
• A dual-core processor with 2 logical CPUs.
  
• A quad-core processor with 4 logical CPUs.
  

SQL Server is licensed per processor socket, and not per logical CPU basis.

SQL Server 2008 edition	Number of processors supported
Enterprise	Operating system maximum
Standard	4
Web	4
Workgroup	2
Express	1
Express with Advanced Services	1

See Also