Only reason I am asking is cuz in documentation for hte Mobo it doesnt indicate that it can run PC3 14900, it does say it can run DDR3 1866 however, I wasnt sure if there was a difference or anything else I need to consider. So will those 3 all be compatible? Thanks in advance!
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The second and third links don't work but if the link below is your mobo it supports RAM speeds up to 2200 Mhz. PC3 14900 and 1866 Mhz. are basically the same thing regarding RAM. One is the industry spec "PC3 14900" and the frequency for that spec is 1866 Mhz.
By default with your i7-2600K the RAM runs at 1066/1333 Mhz. So if you want to run it faster you will need to OC it or select XMP profile in the BIOS. There is little performance gain however from OC'ing DDR3 RAM - typically ~1% system performance.