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We have just upgraded three DL580 G7's that are model 584084-001 to Xeon E7-4870 processors. We found that what mattered in our environment was the revision of the main system board (not the CPU board/tray or SPI riser). After reading that last response, I checked iLO to verify all of our PAL versions. We do have one server that is running 4 E7-4870 ...


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This can not be answered because it depends on what you do application wise. Generally on an application level you do not care about those - you care about application level metrics (average response time per request, to be "simple").


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Yes, this is possible, but currently only with the largest instances of some the newest families using the Intel Xeon E5-2666 v3: c4.8xlarge d2.8xlarge m4.10xlarge The EC2 documentation provides examples of how to do this on Linux. Basically it boils down to limiting the maximum sleep state to C1: kernel /boot/vmlinuz-... [...] intel_idle.max_cstate=1 ...


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Like ewwhite notified it, I just ignored a serious compatibility issue. I finally got my hands on a 643086-B21 CTO model, fitted with two E7-8837 on PROC1 & PROC2. Sequential test done (I,J are E7-8837, SLC3N, 130W TDP): 1) PROC1=I, PROC2=J, PROC3=X, PROC4=X, POST=TRUE (E7 dimm cartridges) 2) PROC1=A, PROC2=B, PROC3=C, PROC4=D, POST=TRUE (E7 dimm ...



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