i totally agree with you that the cpu should be checked by intel , but the EMEA team does not care about my case .
they badly do their job or they have to much to do , but they did not asked for the proof of purchase , i send it by email after watching the youtube film about intel warranty at main page : https://communities.intel.com/community/tech/processors
after more than a week , i still have no rendezvous with the delivery boy to send the cpu at intel for its checking .
for the rest , i also wonder about having an i4930 instead of the i3820 , is there more or less "gold inside" the latest one ? , i am ready to add $ but no shop wants to get a brand new i3820 and sell the i4930 .
may be intel should manage offers to update to new generation of cpu in case like mine .