Does anyone have experience with 64 bit SQL Server 2005 on 64 Bit Windows Server? I am doing research to determine what 64 bit would do for us today. I am looking for justification to upgrade to 64 bit. Our database is a very heavy transactional database. Can anyone point me to any particular web sites or white papers that I can read? I am trying to justify would the benefit in performance justify the cost. Would there be a great increase in performance for a heavy transactional database? Would it help in locking? etc... Has anyone had any issues with 64 bit that they are now sorry that they upgraded from 32 bit to 64 bit?