This message was posted on behalf of Intel Corporation
The memory controller is actually located on the processor, so yes, the memory RAM is directly related to the processor.
The Intel® Core™ i7-5820K Processor, supports DDR4 1333/1600/2133, so the max speed should be 2133MHz and the voltage should be 1.2.
The XMP feature was design to do overclocking, we support the properly functionality of the processor at stock configurations, so, we recommend to disable the XMP profile, and if you are doing overclocking the PC might not work properly.
Overclock: Altering PC clock or memory frequency and/or voltage may reduce system stability and use life of the system, memory and processor; cause the processor and other system components to fail; cause reductions in system performance; cause additional heat or other damage; and affect system data integrity. Intel assumes no responsibility that the memory, included if used with altered clock frequencies and/or voltages, will be fit for any particular purpose. Check with memory manufacturer for warranty and additional details.
If you are using the processor at stock configurations, and the BIOS was set to defaults and the problem persists, that could be a problem with the processor itself, or it could be the memory RAM.
To check on that, we recommend to test the PC with one memory stick at the time, with all the sticks on different memory DIMMs, just to rule out a possible memory problem.