maximum database inserts/second (2 replies)

I am working on a php project that is expected to have 1,000 active users at any instance and i am expecting 1,000 inserts or selects per second.

The question is, if my table uses innoDB Engine and suppose i do not use Transactions,e.t.c to achieve better performance, what is the maximum number of concurrent reads/writes that an innoDB table can handle per second ?

I have 1 table containing 5 columns with 1 index column.