This is on all of the qvl?s, at asus:

[dansandiego]

?It is recommended to install the memory modules from the slots for better overclocking capability?
I hope you may have an idea What does it mean?
Thank-You

[Tradesman]

They are prob referring to whatever they suggest as the primary slots as identified by the individual mobo model, more often than not slots 1-3 from CPU but 2-4 is gaining steam due to the larger CPU coolers that are increasingly popular