I will buy an overclock ram for my msi x99s gaming ack so do i have to setup overclock setting in bios for rams?

Solution
In a BIOS, the ram XMP profile is set to off. That means the ram will run at the lowest speed possible, in this case 2133. X.M.P just enables the ram to run at the specified speed. When you set it to profile 1, it will automatically increase your ram speed.


As the motherboard is use 2133MHZ as standard with 2400(O.C)mhz - 3333mhz of ddr4 but for my country that I live for now only got 2400mhx available so i just wonder that if I should leave it or get into 2400mhz for the rams overclock.
 
Te differene in speed will only be noticable in applications where ram is used heavily, e.g Video Editing.

If you only have 2400mhz ram avalible, just get that and enable X.M.P and leave it. However, if you are building this, I recommend Z97 for gaming.
 


so this will adjust the speed by itself if it break the standard limit?
 
In a BIOS, the ram XMP profile is set to off. That means the ram will run at the lowest speed possible, in this case 2133. X.M.P just enables the ram to run at the specified speed. When you set it to profile 1, it will automatically increase your ram speed.
 
Solution


really...? I am skeptical about this, unless you could overclock 5x the stock speed, you won't notice microseconds of performance...
 


For example, going for 1600 to 2400 will be notcible than from 1600 to 1866. You need it to have a big enough gap to make it worth while. So from 2133 to 2400, maybe a few second or two, but from 2133 to 3000, yes a couple of seconds.
 
Well the only very RAM dependant application I know of is "meshing" in numerical analysis, and I doubt you would get much out off 2133 to 3000. Something that would take 1 hr to mesh would instead take 57 mins maybe? I am throwing numbers literally this is what I think, my guess. I can be completely wrong. idk, this article talks about gains of faster RAM, doesn't seem to make an impact yet.

http://www.extremetech.com/extreme/198894-raming-speed-does-boosting-ddr4-to-3200mhz-improve-overall-performance