HP
864653-001
is compatible in the following HP Models:
Intel Xeon Processors
HP Z640 XEON E5-2697V4 2.3GHZ 2400MHZ 18 CORE 2ND CPU - T9U25AA
HP Z840 XEON E5-2697V4 2.3GHZ 2400MHZ 18 CORE 2ND CPU - T9U43AA