I just bought some new ram and was wondering if it is possible to mix my ram, if i have 4 4gb sticks of DDR4 at 2800mhz and 4 8gb DDR4 sticks that run at 2666mhz, will it cause any problems at all? or should it be good, the downgrading speeds so it is all 2666mhz is not a problem because that is still plenty fast.