Question MSI GL63 8RC RAM

[This Guy Here]

Hey guys, for the MSI GL63 8RC is the best choice the 2666Mhz Corsair Vengeance Performance SODIMM 16 x 2? Or the 3200Mhz one?

Says at MSI's site that for memory it's DDR4 - 2400 / 2666, but when it's overclocked it goes to 4000.

 

[Vic 40]

You overclocked 2666mhz to 4000mhz?