2133MHZ RAM compatibility with Intel i5 2500k

[Jope88]

I was given 2x4GB Kingston HyperX DDR3 2133MHZ RAM for a new build but I've read that anything above DDR3 1333 paired with the i5 begins to cause problems for some.

This will be my first build and I don't know much about memory, is there a way to keep what I have without encountering problems down the road?

I also read somewhere that its possible to lower the MHZ, is it too difficult? Should I just buy a new set of 1333 RAM?

 

[DJDeCiBeL]

The higher speed alone won't necessarily cause problems, it's just not as useful as you would think, once you go past 1600 with SB. What CAN cause problems (and void the warranty of the CPU) is if the RAM is 1.65V instead of 1.5V.

 

[Jope88]

The higher speed alone won't necessarily cause problems, it's just not as useful as you would think, once you go past 1600 with SB. What CAN cause problems (and void the warranty of the CPU) is if the RAM is 1.65V instead of 1.5V.

I see, definitely don't want to void the warranty.. unfortunately the HyperX is 1.6V. Blargh