Question How to overclock Ram with two different Ram speed ? 2666 / 3000 Mhz

[Ehharlo]

motherboard - MSI Z170A Gaming Pro
cpu - i7 - 6700k
ram - Corsair Vengeance LPX 2x 8GB DDR4 2666Mhz + Corsair Vengeance LPX 2x8GB DDR4 3000Mhz


Hi All, recently I bought an extra 2x8gb 3000mhz ram.
I would like to overclock my memory with this two different speed ram.. (2666 / 3000)
Any suggestion how can I get a balance and stable overclocked speed?

How to change the timing with this two different speed / any link I can refer to?

Sorry I'm desperate now and currently it turned to default 2133Mhz.

 

[CountMike]

Try like this: Place faster RAM in primary slots and slower in secondary. Reset CMOS and with some luck it should recognize it after applying XMP. and work at faster RAM's frequency.