Hello Jason_DocMntn,   You may need to source the same original motherboard if you have new sideplane and embedded ESX.   The Part# Y436H willl not work. Version 2 of the motherboard introduced support for  Istanbul Processors along with having current BIOS. Version 3 is the original one on your system.     Part# JKN8W -  PWA,PLN,SV,TRPM,PE2970,V3  MB, TRPM, Micro Star ( Service Kit C8CXW - Required for new sideplane & embedded ESX, BIOS v4.1.0, Dec 2009)   Part# H535T - PWA,PLN,SV,TRPM,PE2970,V2  MB, TRPM, Micro Star (Service Kit KWNMM -Required for Istanbul Processors, BIOS v4.0.4, June 2009)   Part# Y436H  - PWA,PLN,SV,DELL,TRPM,PE2970 MB, TRPM, Micro Star (Required for Shanghai Processors, BIOS v3.0.1, Nov 2008)     BIOS 4.0.4  Added support for the new Six-Core AMD Opteron(TM) Processor. Apply latest BIOS : 4.1.1  here : [URL]   I hope this helps.
Could use some help as I'm racking my brain. I'm trying to resurrect a PowerEdge 2970 after a motherboard failure.The new board is aCN-0Y436H Rev A02I've tried 3 different AMD Opteron 2427 CPU's and I get the same result on each of them."This system does not support Opteron(TM) NPT family 10h dual-core processors."Aren't these six-core chips I'm using?!I get no error messages on the server display (no orange light) and I only get the above message upon 1st start with the motherboard battery removed and put back in.  Subsequent restarts gets the fans to spin and then the machine shuts down, acting like it just won't boot.What am I doing wrong here?
2970 Server CPU Support on Y436H