you tell us. try overclocking it and see where its limit is. if it stops at 3.0Ghz its no good. if it goes to 3.5 its good.
the batch date or where its packaged dosen't mean **** because as everyone knows, overclocking is not guarantee'd.
good luck, let us know how it does and if you have trouble post a question about your problem someone will help you. there are already alot of great info in the forums