I have a Dell inspiron PC that came with 4GB DDR3 1600 ram. Recently, I noticed that the computer was getting EXTREMELY slow, so I decided to look at CPU-Z. Straight away, I noticed that the ram NB frequency is 2294. I don't know, is this bad, normal, or what? I must add that I don't know much about RAM and I don't know what NB frequency is at all.