LOL...
Do u have WinCPUID installed? If u do, run it and se what it shows for Family and Model.
Alternately, u cud remove the Heat sink and note down the 2 rows of letters and numbers on the CPU which starts with something like AXDA.. But if u have not removed and replaced the Heat sink before, i suggest u dont do that.
<b>Never Underestimate The Power Of Stupid People In Large Groups</b>