asked
data files
how many data files should I create for tempdb database for better performance result
What makes you think you have a performance issue on your TempDB?
ideally the number of tempdb files should is same to total number of CPU . Tempdb file size should be same for all. dont keep auto grow to unrestricted.
Nope. Common misconception. See here:
http://www.sqlskills.com/BLOGS/PAUL/post/A-SQL-Server-DBA-myth-a-day-(1230)-tempdb-should-always-have-one-data-file-per-processor-core.aspx
I would disagree with a blanket recommendation such as that that @viikiseth makes. See for some discussion. In reality, the answer is going to be "it depends" - in this case, on your IO infrastructure, your server load, the query load your server is handling. And you should only start looking at this if you are experiencing issues with the performance of your TempDB.
On two or four core machines it is pretty automatic. It's when you get into enterprise class servers and workloads that you need to thoroughly analyze your requirements. So even the "it depends" depends somewhat :)
