A:Answer Hello,
This model uses an I7-8700 processor which runs at a base frequency of 3.20GHz to a max turbo frequency of 4.60 GHz. As for what what brand you should upgrade to, we cannot give you any one recommendation as there are so many brands available that would work well with this model. However, when upgrading, please make sure the two 8GB ram sticks you purchase run at the same speeds for optimal performance.