Did those have "Intel Confidential" on them? The CPU I bought was working fine though, the seller guaranteed it and he had the reputation on eBay to back it.

Did those have "Intel Confidential" on them? The CPU I bought was working fine though, the seller guaranteed it and he had the reputation on eBay to back it. My (possibly) naive logic then, was that an early sample was likely to be made from the best silicon, which often correlates with good OC potential...