SQL Server Licensing Considerations
Great Article about SQL Server Licensing:
Multicore processors, which consist of multiple processing execution units or “cores” on one chip, promise to boost computing power, allowing servers, workstations, and PCs to perform more functions simultaneously. By the end of 2006, Intel expects more than 80 percent of its server products to be shipping with multicore technology. Because most server-side software is licensed “per processor,” it has caused confusion among some software vendors regarding whether to charge their customers “per processor” or “per core.”
http://www.microsoft.com/Sqlserver/2005/en/us/special-considerations.aspx#multiplexing
or this one:
