Alienware m18x r2 2133hz ddr3 upgrade

Is this memory support alienware m18x r2 or not

 

Officially no, typically most systems will only officially support what intel states it will support.

That being said I have had no issue running 2133Mhz on any of my 4th gen platforms and I believe @Mr. Fox ran similar memory in his m18x r2 at one point

 

It's working on my M17x R4, you need an ivy bridge CPU and a good IMC (not all cpu can handle these memory frequency), on sandy bridge it will be limited at 1866MHz memory.

 

I have the same memory in my M18x R2 works perfect with 3920XM