LGA-2011 RAM Speeds

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1

Does anybody have real world experience with LGA-2011 platform. Can confirm what speeds at table are correct?

Operating Frequency, MT/s
DIMM Type (No Mixing in a Server) DIMMs per Channel Maximum DIMM Rank/Channel 1.5V 1.35V
1866 1600 1333 1066 800 1866 1600 1333 1066 800
1                                                                                                                                                                                                                                                          
DDR3 UDIMM ECC (and maybe No-ECC) 2 Dual Rank                                                                                                                                                                                                                                                          
3                                                                                                                                                                                                                                                          
1    Xeon E5 v2         Xeon E5                                                                                                             Xeon E5 v2         Xeon E5                                                       
DDR3 32GB RDIMM 2 Single, Dual Rank          Dell               Xeon E5                                                                                                             Xeon E5 v2         Xeon E5                                                       
3                                                            Dell                                                                                                                                                Dell             Xeon E5 v2   
1                               Kingston                                                                                                               Kingston           Xeon E5                                                       
DDR3 32GB or 64GB RDIMM 2 Quad Rank                                                                                     Dell                                                                                                                       Dell                   Dell         
3                                                                                                                                                                                                                                                          
1          Dell                   Dell                                                                                                                       Dell                   Dell                                                           
DDR3 32GB or 64GB Load Reduced DIMM (LRDIMM) 2 Quad Rank                                   Dell                                                                                                                       Dell                   Dell                                                           
3                                                            Dell                                                                                                                                                Dell               Kingston     
1                                                                                                                               Not applicable   Not applicable   Not applicable   Not applicable   Not applicable 
DDR3 32GB or 64GB Load Reduced DIMM (LRDIMM) 2 Octal rank                                                                                                                               Not applicable   Not applicable   Not applicable   Not applicable   Not applicable 
3                                                                                                                               Not applicable   Not applicable   Not applicable   Not applicable   Not applicable 
What colors means

Good
Good (Kingston source)
Bad
Dell source

Notes

* Xeon E5 series processors can support up to DDR3-1600 at 1.5V or DDR3L-1333 at 1.35V. (Single, Dual, Quad Rank)
* Xeon E5 v2 series processors can support up to DDR3-1866 at 1.5V or DDR3L-1600 at 1.35V. (Single, Dual, Quad??? Rank)
* Xeon E5 series processors: Up to two RDIMMs per channel or 2DPC (eight modules per processor in quad-channel configuration) Note: In fully loaded configurations on servers that provide twelve memory sockets per processor, Xeon E5 series processors will run the memory at 1066 MT/s 1.5V. (Single, Dual Rank)
* Xeon E5 v2 series processors: Up to one DDR3-1866 RDIMM per channel, or 1DPC (four modules per processor in quad or triple-channel configuration). Up to two DDR3-1600 RDIMMs, or 2DPC (eight modules per processor in quad or triple-channel configuration). Note: In fully loaded configurations on servers that provide twelve memory sockets per processor, Xeon E5 v2 series processors will run the memory at 1066MT/s 1.5V / 800MT/s 1.35V. (Single, Dual Rank)

Same question in others forums

Overclockers.ru

Is it possible to overclock to 1866 MT/s in 1 DPC and 1600 MT/s - 2 DPC? And what crazy speeds someone got on 3 DPC!

2

if the chipset is not X79 (real X79 or some chinese board that unlocked the mobo since some LGA 2011 mobo do use H67 and other chipsets, called (frankensteined mobo)), then you’re up to the motherboard itself to have the capability for manual OC. Sometimes they could only max the clock at 1866 at Ivy, or 1600 at sandy, since it’s their max speed (not an OC but running the max spec’d memory speed).

Also OCing server ram is pretty much reducing the means of ECC, if you do use it. But hey, it’s trials and error you should try it yourself.