Hi all,
I've got a Xeon E5-2650 v2 and I'm looking to add a second processor to my system. I've had a good dig around this morning and even though a lot of the info I read dates back to around 2010 it appears that you have to use the same stepping when matching CPUs - is this still the case?
I see no benefit in getting any CPU other than what I already have so my plan is to get a second E5-2650 v2. However the stepping is fairly confusing - everything I read online says the stepping is only available in "M1" with S-Spec "SR1A8". When using CPUID my processor comes up with a stepping value of "4". Does this translate between the two somehow? Or do I even need to worry about the minute details these days?
Advice would be appreciated - Thanks everyone!
Intel spec on the CPU here:
http://ark.intel.com/products/75269/Intel-Xeon-Processor-E5-2650-v2-20M-Cache-2_60-GHz#@ordering
CPUID Report below:
Intel(R) Processor Identification Utility
Version: 5.30.20150729
Time Stamp: 2015/09/04 23:27:19
Operating System: 6.1-7601-Service Pack 1
Number of processors in system: 1
Current processor: #1
Active cores per processor: 8
Disabled cores per processor: 1
Processor Name: Intel(R) Xeon(R) CPU E5-2650 v2 @ 2.60GHz
Type: 0
Family: 6
Model: 3E
Stepping: 4
Revision: 428
Maximum CPUID Level: D
L1 Instruction Cache: 8 x 32 KB
L1 Data Cache: 8 x 32 KB
L2 Cache: 8 x 256 KB
L3 Cache: 20 MB
Packaging: LGA2011
Enhanced Intel SpeedStep(R) Technology: Yes
MMX(TM): Yes
Intel(R) SSE: Yes
Intel(R) SSE2: Yes
Intel(R) SSE3: Yes
Intel(R) SSE4: Yes
Intel(R) AES-NI: Yes
Intel(R) AVX: Yes
Enhanced Halt State: Yes
Execute Disable Bit: Yes
Intel(R) Hyper-Threading Technology: Yes
Intel(R) 64 Architecture: Yes
Intel(R) Virtualization Technology: Yes
Intel(R) VT-x with Extended Page Tables: Yes
System Graphics: Add-in Graphics
Expected Processor Frequency: 2.60 GHz
Reported Processor Frequency: 2.99 GHz
Expected System Bus Frequency: 100 MHz
Reported System Bus Frequency: 100 MHz
I've got a Xeon E5-2650 v2 and I'm looking to add a second processor to my system. I've had a good dig around this morning and even though a lot of the info I read dates back to around 2010 it appears that you have to use the same stepping when matching CPUs - is this still the case?
I see no benefit in getting any CPU other than what I already have so my plan is to get a second E5-2650 v2. However the stepping is fairly confusing - everything I read online says the stepping is only available in "M1" with S-Spec "SR1A8". When using CPUID my processor comes up with a stepping value of "4". Does this translate between the two somehow? Or do I even need to worry about the minute details these days?
Advice would be appreciated - Thanks everyone!

Intel spec on the CPU here:
http://ark.intel.com/products/75269/Intel-Xeon-Processor-E5-2650-v2-20M-Cache-2_60-GHz#@ordering
CPUID Report below:
Intel(R) Processor Identification Utility
Version: 5.30.20150729
Time Stamp: 2015/09/04 23:27:19
Operating System: 6.1-7601-Service Pack 1
Number of processors in system: 1
Current processor: #1
Active cores per processor: 8
Disabled cores per processor: 1
Processor Name: Intel(R) Xeon(R) CPU E5-2650 v2 @ 2.60GHz
Type: 0
Family: 6
Model: 3E
Stepping: 4
Revision: 428
Maximum CPUID Level: D
L1 Instruction Cache: 8 x 32 KB
L1 Data Cache: 8 x 32 KB
L2 Cache: 8 x 256 KB
L3 Cache: 20 MB
Packaging: LGA2011
Enhanced Intel SpeedStep(R) Technology: Yes
MMX(TM): Yes
Intel(R) SSE: Yes
Intel(R) SSE2: Yes
Intel(R) SSE3: Yes
Intel(R) SSE4: Yes
Intel(R) AES-NI: Yes
Intel(R) AVX: Yes
Enhanced Halt State: Yes
Execute Disable Bit: Yes
Intel(R) Hyper-Threading Technology: Yes
Intel(R) 64 Architecture: Yes
Intel(R) Virtualization Technology: Yes
Intel(R) VT-x with Extended Page Tables: Yes
System Graphics: Add-in Graphics
Expected Processor Frequency: 2.60 GHz
Reported Processor Frequency: 2.99 GHz
Expected System Bus Frequency: 100 MHz
Reported System Bus Frequency: 100 MHz