This message was posted on behalf of Intel Corporation
Thank you so much for contacting us regarding the questions and inquiries that you have about your CPU’S warranty period, it will be more than a pleasure to help you out with all the information about it.
Essentially all brand new sealed/boxed CPUs must have 3 years of warranty if they are purchased only through an Intel Authorized Distributor.
If that’s the case could make an RMA if the markings (ATPO and FPO) of the unit are validated through:
If you do not know where to find this information you can use the following link:
However if online users (like the ones claiming that they provide 3 years of warranty from Ebay) sell a processor to an online purchaser, they must be in charge of the warranty, meaning that if you run into any issues the original seller from Ebay must take care of the warranty under his/her expenses.
I hope this helps.