SQL Server 2012's Hardware and Software Requirements

SQL Server 2012 is designed to run on a wide range of computer systems—from laptop and desktop systems to supercomputer class systems—so its minimum hardware requirements are surprising low. The minimum processing requirement is a 1.0GHz CPU for a 32-bit x86 implementation and a 1.4GHz CPU for a 64-bit x64 implementation. Microsoft's recommended minimum processor speed is 2.0GHz.

The minimum memory requirements for SQL Server 2012 are also quite low. The low-end SQL Server 2012 Express edition requires a minimum of 512MB of RAM, whereas the other editions require a minimum of 1GB. Microsoft's recommended minimum RAM for SQL Server is 4GB.

These days, it's hard to buy even a desktop system with anything lower than a 1GHz processor and 1GB of RAM, so these hardware requirements shouldn't be a problem for most businesses. Of course, most production implementations will require more processing power and greater amounts of memory.Before installation dot net framework 3.5 or higher version should be installed on server. 

Each SQL Server 2012 edition has different OS requirements. In addition, the 32-bit x86 versions and the 64-bit x64 versions of the SQL Server 2012 editions have somewhat different OS requirements. The following table lists all the supported Windows OSs for the principal editions of SQL Server 2012.

Supported Windows OSs for the Principal Editions of SQL Server 2012
SQL Server Edition	Windows OSs That Support 32-Bit SQL Server	Windows OSs That Support 64-Bit SQL Server
SQL Server Enterprise	Windows Server 2012 64-bit Datacenter, Standard, Essentials, and Foundation editions Windows Server 2008 R2 SP1 64-bit Datacenter, Enterprise, Standard, and Web editions Windows Server 2008 SP2 64-bit Datacenter, Enterprise, Standard, and Web editions Windows Server 2008 SP2 32-bit Datacenter, Enterprise, Standard, and Web editions	Windows Server 2012 64-bit Datacenter, Standard, Essentials, and Foundation editions Windows Server 2008 R2 SP1 64-bit Datacenter, Enterprise, Standard, and Web editions Windows Server 2008 SP2 64-bit Datacenter, Enterprise, Standard, and Web editions
SQL Server Business Intelligence	Windows Server 2012 64-bit Datacenter, Standard, Essentials, and Foundation editions Windows Server 2008 R2 SP1 64-bit Datacenter, Enterprise, Standard, and Web editions Windows Server 2008 SP2 64-bit Datacenter, Enterprise, Standard, and Web editions Windows Server 2008 SP2 32-bit Datacenter, Enterprise, Standard, and Web editions	Windows Server 2012 64-bit Datacenter, Standard, Essentials, and Foundation editions Windows Server 2008 R2 SP1 64-bit Datacenter, Enterprise, Standard, and Web editions Windows Server 2008 SP2 64-bit Datacenter, Enterprise, Standard, and Web editions
SQL Server Standard	Windows Server 2012 64-bit Datacenter, Standard, Essentials, and Foundation editions Windows Server 2008 R2 SP1 64-bit Datacenter, Enterprise, Standard, Foundation, and Web editions Windows 8 32-bit and 64-bit Windows 8 Pro 32-bit and 64-bit Windows 7 SP1 64-bit Ultimate, Enterprise, and Professional editions Windows 7 SP1 32-bit Ultimate, Enterprise, and Professional editions Windows Server 2008 SP2 64-bit Datacenter, Enterprise, Standard, Foundation, and Web editions Windows Server 2008 SP2 32-bit Datacenter, Enterprise, Standard, and Web editions Windows Vista SP2 64-bit Ultimate, Enterprise, and Business editions Windows Vista SP2 32-bit Ultimate, Enterprise, and Business editions	Windows Server 2012 64-bit Datacenter, Standard, Essentials, and Foundation editions Windows Server 2008 R2 SP1 64-bit Datacenter, Enterprise, Standard, Foundation, and Web editions Windows 8 64-bit Windows 8 Pro 64-bit Windows 7 SP1 64-bit Ultimate, Enterprise, and Professional editions Windows Server 2008 SP2 64-bit Datacenter, Enterprise, Standard, Foundation, and Web editions Windows Vista SP2 64-bit Ultimate, Enterprise, and Business editions

For a more complete discussion of SQL Server 2012, see "Migrating to SQL Server 2012."