I did look up the Intel datasheet amongst other things the last time Raja mentioned tRRD/tFAW 4/16 earlier in this thread & although it could be a BIOS/Software report issue its less likely as the apparent performance increase has been found on both my Gigabyte & M.Beier's Asrock so I'm inclined to say there may be more to it.

I may re-test just to be double sure I am getting a boost but not that bothered as whatever works ..... works ay.

I did note tFAW too low @ 2600+ hurt performance so maybe it has a limit of effectiveness