Hmm
“AMD is aware of no other customer reports of the alleged issues with the AMD chip that Quanta used, which AMD no longer sells,” Silverman said. “In fact, Quanta has itself acknowledged to AMD that it used the identical chip in large volumes in a different computer platform that it manufactured for NEC without such issues.”
So either chips weren't defective and quanta failed to meet the cooling requirements or chips were defective but only in this one series of products (which is really strange to say the least).