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October 17th, 2025 13:41
R640/R740 2nd CPU doesn't be detectited
Hello,
I have a R640 and a R740 and i need to upgrade the processor.
I have one Intel Xeon Processor 6208U Gold on my R640 and i try to had another one (exactly the same).
After multiple try, the second one isn't detectited.
On the R740 with Intel Xeon Processor 4208 it's works but when I put my 2x Intel Xeon Processor 6208U Gold its works only for one.
Do you know if i need to change somthing?
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DELL-Charles R
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October 17th, 2025 18:55
Hello,
Have you populated B side memory for the second processor? Both processors must have identical memory configuration.
Check that you have BIOS and iDRAC firmware up to date
Check socket 2 for any bent pins. A flashlight at an angle can help see any bent pins.
Make sure you have heat sink and thermal paste
Try each CPU in socket 1 only to test. Try that with only DIMM A1. (CPU1 and A1 only with each processor).
No second processor and no B side memory.
When you have confirmed then add second CPU2 and DIMM B1
Origin3k
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2.3K Posts
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October 18th, 2025 08:54
@Benjamin - IDEEE
you have a 6208U? A "U"? Than you should find out what the U stands for and than you will know why it never will work.
Iam pretty sure you will bang your head and smile about that funny Layer8 problem.
Regards,
Joerg