I need to mix 2 Nehalem-EP 55xx processors on S5520HC board. How do I know which processors are compatible to mix? And is there any additional step needed to use 2 mixed processors on the system? I tried E5540 with E5530, X5560 with E5520, but all I got is a black screen when I power on the system. Front panel LED is ok, no POST code, no beep code, nothing on screen to tell me what's wrong.
Please help, thanks.
Hi db4, Thanks for your question. I found the information you are looking for here in the Intel® Xeon® Processor 5500 Series, Datasheet Volume 1.
Now, I'm sure you don't want to really read the whole thing, so to make it easier to answer this specific question, here is the section that may interest you.
2.3 Mixing Processors
Intel supports dual processor (DP) configurations consisting of processors:
1. from the same power optimization segment
2. that support the same maximum Intel QuickPath Interconnect and DDR3 memory
3. that share symmetry across physical packages with respect to the number of
logical processor per package, number of cores per package, number of Intel
QuickPath interfaces, and cache topology
4. that have identical Extended Family, Extended Model, Processor Type, Family Code
and Model Number as indicated by the function 1 of the CPUID instruction
Note: Processors must operate with the same Intel QuickPath Interconnect, DDR3 memory,
and core frequency.
While Intel does nothing to prevent processors from operating together, some
combinations may not be supported due to limited validation, which may result in
uncharacterized errata. Coupling this fact with the large number of Intel Xeon
Processor 5500 series attributes, the following population rules and stepping matrix
have been developed to clearly define supported configurations.
1. Processors must be of the same power-optimization segment. This insures
processors include the same maximum Intel QuickPath interconnect and DDR3
operating speeds and cache sizes.
2. Processors must operate at the same core frequency. Note, processors within the
same power-optimization segment supporting different maximum core frequencies
(e.g. a 2.93 GHz / 95 W and 2.66 GHz / 95 W) can be operated within a system.
However, both must operate at the highest frequency rating commonly supported.
Mixing components operating at different internal clock frequencies is not
supported and will not be validated by Intel.
3. Processors must share symmetry across physical packages with respect to the
number of logical processors per package, number of cores per package (but not
necessarily the same subset of cores within the packages), number of Intel
QuickPath interfaces, and cache topology.
4. Mixing dissimilar steppings is only supported with processors that have identical
Extended Family, Extended Model, Processor Type, Family Code and Model Number
as indicated by the function 1 of the CPUID instruction. Mixing processors of
different steppings but the same model (as per CPUID instruction) is supported.
Details regarding the CPUID instruction are provided in the AP-485,
Intel® Processor Identification and the CPUID Instruction application note and the
Intel® 64 and IA-32 Architectures Software Developer’s Manual, Volume 2A.
5. After AND’ing the feature flag and extended feature flags from the installed
processors, any processor whose set of feature flags exactly matches the AND’ed
feature flags can be selected by the BIOS as the BSP. If no processor exactly
matches the AND’ed feature flag values, then the processor with the numerically
lower CPUID should be selected as the BSP.
6. Intel requires that the proper microcode update be loaded on each processor
operating within the system. Any processor that does not have the proper
microcode update loaded is considered by Intel to be operating out of specification.
7. Customers are fully responsible for the validation of their system configuration.
Let us know if this answers your question.
Dear Ladies and Gentlemen of Intel,
I need your help and knowledge for making a decision.
I'm going to buy a new workstation at Dell company within the next 4 weeks.
I will use it mainly with 3D applications Maya and Rhino.
It will be a dual processor workstation and uses one of the following processors:
x5570 or w5580.
I know about the basic technical differences:
x5570 2,93 GHz 95W
w5580 3,20 GHz 130W
But when reading technical forums it is often said, the x5570 is specified for server applications while the w5580 is made for workstation use.
So besides powerconsuming and clockspeed, are there any markable differences with the application running?
Will a x5570 handle Maya actions any different then a w5580 does?
Thank you for your help!
On the new Nehalem based boxes we are seeing a discrepancy reported from the OS on the installed memory. I have used (12) 4GB dimms and (6) 8GB dimms and both show the exact same amount of phyical memory avaible. The issue is that the OS is only reporting that I have 47.144GB? Any help would be greatly appreciated.