2. (Trained Service technician only) Replace associated Processor. Inspect Processor socket and
replace the compute book first if socket is damaged
• I.18009 A core speed mismatch has been detected for one or more processor packages.
Processors have mismatched Core Speed
Explanation: A core speed mismatch has been detected for one or more processor packages.
Processors have mismatched Core Speed
Severity
Error
User Response
Complete the following steps:
1. Verify that matching processors are installed in the correct processor sockets according to the
service information for this product. Correct any mismatch issues found.
2. Check IBM support site for an applicable service bulletin or firmware update that applies to this
Processor error.
3. (Trained Service technician only) Replace Processor. Inspect Processor socket and replace the
compute book first if socket is damaged.
• I.1800A A mismatch has been detected between the speed at which a QPI link has trained between
two or more processor packages. Processors have mismatched Bus Speed
Explanation: A mismatch has been detected between the speed at which a QPI link has trained between
two or more processor packages. Processors have mismatched Bus Speed
Severity
Error
User Response
Complete the following steps:
1. Verify that the Processor is a valid option that is listed as a Server Proven device for this system.
If not, remove the Processor and install a Server Proven one.
2. Verify that matching Processors are installed in the correct Processor sockets according to the
service information for this product. Correct any mismatch found.
3. Check IBM support site for an applicable service bulletin or firmware update that applies to this
processor error.
4. (Trained Service technician only) Replace the Processor. Inspect Processor socket and replace
the compute book first if socket is damaged
• I.1800B A cache size mismatch has been detected for one or more processor packages.
Processors have one or more cache levels with mismatched size
Explanation: A cache size mismatch has been detected for one or more processor packages. Processors
have one or more cache levels with mismatched size
Severity
Error
User Response
Complete the following steps:
1. Verify that matching processors are installed in the correct processor sockets according to the
service information for this product. Correct any mismatch found.
2. Check IBM support site for an applicable service bulletin or firmware update that applies to this
Processor error.
3. Replace the compute book.
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System x3850 X6 and x3950 X6 Installation and Service Guide
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