what is the i7 4790k supported ram speed?

[Samson_1]

hi i just recently watched a video of i7 build and they are using ddr3 2133mhx ram for it but intel chart says that this cpu can't support more than 1600mhz of ram so can anyone explain me how is it possible?
links to video and intel chart are
http://ark.intel.com/products/80807/Intel-Core-i7-4790K-Processor-8M-Cache-up-to-4_40-GHz
https://www.youtube.com/watch?v=VIF43-0mDk4

 

[Supahos]

It can typically go as high at 3000 mhz, just enable XMP on sticks rated for that speed

 

[Samson_1]

i still can't under stand this.... 🙁

 

[Supahos]

Nothing to understand stock speeds are 1600 oc speeds are pretty potentially much higher. 2400 cl 10 sticks are where I'd stop however. They aren't much more expensive and a lot faster than 1600. Gskill tridents come to mind, them or ripjaws Z series (black ones)

 

[chris987]

the default speeds are supported by all family cpu / mobos. above that you need the correct combination of cpu / mobo in order to run higher ram models. high speed ram sticks achieve such speeds through xmp(extreme memory profile) . since memory controller lies within the cpu, the better (cpu) chip you have, the higher the ram speed you can run with. overclocking will additionally improve that ability. so obviously an unlocked (K) i5 / i7 paired with Z87 / 97 will reach the highest speed possible!

 

[lessthan0]

The stock memory is allowed to run at 1333mhz. However, I have seen people push it to 2933mhz.
It wouldn't really make a difference if you OC it either.