RAM for an LGA 2011 sysytem....

Question

Will this gSkill Ram work well on a lga2011 3930k system?
[url=http://www.newegg.com/Product/Product.aspx?Item=N82E16820231490]G.SKILL Ripjaws X Series 32GB (2 x 8GB) 12800CL10Q-32GBXL [/url]
Someone else said I needed zSeries, what is the difference? 
Also what will there be a problem with running dual channel ram in a 2011 sysytem?
[url=http://www.newegg.com/Product/Product.aspx?Item=N82E16820231489]G.SKILL Ripjaws X Series 16GB (2 x 8GB)  F3-12800CL10D-16GBXL [/url]
I fear I may need to sell off some pre bought RAM.
What are the main considerations for buying RAM for a 2011?

Answer 1

Many of the recommendations including those of Harm are items you should consider. Overall the important points to keep in mind are noted below.
The IMC memory controller is only validated at 1333 and 1600. While our UEFI and board have been developed to allow for support of higher dividers this supports varies on the quality of the IMC. Most IMCS will not have issues running up to 1866 in full population. Keep in mind though that the higher the density and the higher the frequency the hard it becomes for the memory controller to stability. Currently we have for normal users validated up to 2400 XMP but this requires an outstanding IMC ( with sheer luck in that a CPU will offer running this frequency and density ). Higher frequencies are of course supported whether it be overclocking a module or even using higher rated kits ( 2600+ )
If you are pursuing high density configurations whether it be 32GB or even 64GB to ensure the best level of compatibility and stability i would advise you run 1600. 1866 as well should be ok. In regards to vendors GSKill has outstanding SPD and XMP programming and we have an extremely close relationship with them during the development and validation of their modules ( this is why you will see our boards continually under there compatibility lists for kits ) Although keep in mind that for all memory vendors much of the higher frequency memory kits are validated on high performance IMCs on select CPUs. In this respect while that module has been ensured to run at that speed it is not a guarantee to run on your CPU ( unless the frequency is conservative and applicable to most IMCs )
Keep in mind also that not all memory manufacturers are using correctly defined XMP tables (meaning they can potentially make adjustment to voltages they should not be adjusting). Technically under the XMP 1.3 specification vendors are only allowed to define timings and frequency all MRC timings and voltages must be auto defined by the board ( excluding the primary DRAM voltage ). This is important as XMP in itself is actually defined to work on the worst motherboards this actually is not always ideal as it may have to work on vendor’s motherboards who have poor bios/uefis or lower quality trace layout which is key for optimal memory performance and compatibility. All in all XMP from a quality vendor will work on our boards but just keep in mind XMP may not always be "guaranteed or even the best settings for the modules".
Great vendors to consider for memory on X79.
GSKill, Corsair, Kingston, Patriot, Mushkin, Crucial,
In regards to compatibility we have currently validated with all active kits on the market for 32GB and 64GB. As of now we have no current compatibility or bit initialization issues ( can occur when vendors incorrectly code SPD or XMP information ).
Following up on your question in reference to QVL's these are outlined at the initial launch and generally completed 2weeks to a month prior to the launch as such you will find many newer kits not present. Additionally in transition periods of density increases ( like the commonness of 4GB or even now 8GB dimms affects considerations as these modules and even frequencies were not available at the time of the launch ).
Overall though we do compatibility and interoperability tests continually to ensure the best support possible. With that in mind there are factors that can influence initialization of memory.
Installation issues
1. Damaging of pins during installation ( even 1 pin slightly pin or damage can impact memory initialization )
2. Too much pressure from heatsink assembly can uneven pressure contact with the pin / pad ( socket to CPU )
3. Mixed memory revisions ( this can occur even with the same model memory kits ) Memory vendors change ICs over time as such memory while it should work at lower frequencies and more relaxed timings can have compatibility issues in higher densities due to sensitivities of the IMC. If possible also try to buy matched sets and ensure the revision number is the same across all modules.
4. Memory controller voltage this can be modified ( increased at times to help stabilize higher frequencies and higher densities ) this is more common for high speed kits 1866 and greater
Hope this helps!