i purchased the Phenom II X3 715 Heka oem. I put in an asus M4A785-M and unlocked the 4th core. cpuz reads it as a socket am3 938 phenom II X4 Deneb core revision RB-C2. AMD overdrive says it is a socket am2+ with the same revision. Both programs list it as a PhenomII X4 15. ON newegg and at AMD's web site the 715 is listed as an am2+. When I had it as the 715, cpuz called it a socket am3 938. What else can I confirm its true identity since I am considering putting in a socket am3 board.
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With all due respect, if its an am2+ cpu I don't believe it will work on an am3 board due to its lack of a ddr3 memory controller.