Ram mhz speed

That depends on the complete configuration of your machine, i.e. processor, motherboard, amount of installed RAM, onboard graphics using shared RAM or not, what operating system you are running, etc. and how you use the machine such as spreadsheets, word processing, video editing, 3D CAD drawings and/or animations, artificial intellgence, etc.

More than likely it will have very little, if any, noticable effect.
 

JohnKristian

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Well, i got

i7-4770k
MSI Z87-GD65 Gaming, Socket-1150
Kingston DDR3 HyperX Beast 8GB 2400 mhz.
win7

Would it not do anything gaming wise?
 
You might seem a small improvement because you are currently running 1333 but anything over 1600 won't give much improvement at all. The good news is your mobo supports the faster memory. The bad news is you'll then be nottlenecked somewhat by the processor in real life applications. Theoretically you would have 45% increase in memory speed you wouldn't see all of that. Maybe a little over 10% would be apparent and its hard to tell if you would notice it or not.

I would say save the money for your next build.
 

JohnKristian

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I wouldent save any money, cause i allready have the Kingston DDR3 HyperX Beast 8GB 2400 mhz, its just that it runs at 1333.

So i should just set it to run at 2400 mhz? nothing bad can happen, right?