b250-d2v

Hello, I have Gigabyte B250-D2V motherboard and ADATA XPG Flame 4GB DDR4 2400mhz CL16-16-16 RAM. Now I want to upgrade RAM, but I am unable to find the same model with 8GB variant. so my question is if I buy 8GB 2666mhz CL17 RAM or CL16 RAM, will it work fine along with 4GB 2400mhz CL16...