VMware
The online VMware Compatibility Guide supports server, I/O, and SAN guides for ESX releases 3.0 and greater. For earlier ESX releases or other product compatibility guides, please use the "Other Documents" tab.

To support VMotion, make sure that the source and destination hosts have compatible CPUs. You can distinguish different processor versions within the same family by comparing the CPUs' model, stepping level, and extended features. To learn more about VMotion CPU compatibility requirements, refer to the following: To check if your CPUs are compatible for VMotion under Enhanced VMotion Compatibility (EVC), please refer to the following KB article: http://kb.vmware.com/kb/1003212

To search for servers by EVC capability, click here