Keep in mind that an AMD processor will not fit on an Intel socket ... use different socekt types, so it's important to identify the compatible socket before buying a new CPU.

Which legacy socket(s) accepted both Intel and AMD CPUs? Released in March 1994, Socket 5 was designed for second-gen P5 Pentium processors among other Intel parts, but could also accept AMD K5 ...

Intel says its new Xeon 6 ... of processors with two different core types, Singhal emphasized that they are compatible with the same server socket and come with the same level of software support ...