i hope to buy a new cpu and im stuck between these two cpus.core i5 3570k and core i7 2600k.i hope to use rams which exceed 1333mhz.i saw in gigabyte site that some mobos they manufacture need 22nm cpu to use 1600rams..is that true.if i buy a i7 2600k will i be able to use 1600mhz rams with it?(if i buy a i7 processor which mobo would be a optimal for it?asus P8Z68-V or ASUS P8B75-M)