PE2950 Won't Run Quad-Core CPU

[Michael_Christensen2 at Dell.com]

There is a newer BIOS out than the one you tried and it has microcode
updates for quad core cpu's, give it a go.

http://support.dell.com/support/downloads/download.aspx?fileid=242352 
Direct link: http://ftp.us.dell.com/bios/PE2950_BIOS_LX_2.1.1.BIN


System:         Dell(TM) PowerEdge(TM) 2950
Version:        2.1.1
Release Date:   02/01/2008
______________________________________________________________________

***********************************************************************
*		IMPORTANT NOTE
*
* This update includes recommended microcode updates from Intel. A 
* specific generation of Intel-based dual and quad core processors 
* could potentially cause Machine Check Exception (MCE) or system hang.
*
***********************************************************************

* Updated Quad-Core Intel(R) Xeon(R) Processor 5400 series C0 Stepping
  Microcode (Patch ID=60B)
* Updated Dual-Core Intel(R) Xeon(R) Processor 5200 series C0 Stepping
  Microcode (Patch ID=60B)


The part number "GW622 - PRC,80563K,XCL,X5355,LGA771,G0 2.66 Xeon
Clovertown, X5355, LGA771, G0" is listed as being a valid option for a
PE2950


//Michael