1. 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
2. The minimum memory is 512 MB for express edition and for all other editions is 1 GB, Microsoft's recommended minimum memory is 1 GB for Express edition and for all is 4 GB
3. Processor Type x64 Processor: AMD Opteron, AMD Athlon 64, Intel Xeon with Intel EM64T support, Intel Pentium IV with EM64T support
4. SQL Server requires a minimum of 6 GB of available hard-disk space.
5. Installation of SQL Server 2016 and higher is supported on x64 processors only. It is no longer supported on x86 processors.