Dell PowerEdge r520 dual vs single CPU

 If one every decides to add a 2nd CPU to a Dell PowerEdge r520, besides the CPU, CPU sink, extra system fan, one also needs a different PCIe riser card.

What?

Turns out the riser cards are different!  If one puts a 2nd CPU in to a system without replacing the riser, the system works, however the system LCD will be amber, flashing, and giving an error: :HWC2005 system board riser cable interconnect failure".  The machine still functions just fine, it just has the annoying alerts.




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