Intel is using QLC. From the reviews I saw on youtube it looks like QLC is only good for gaming. Your data doesn't get over-written much in gmaing so the negatives of QLC shouldnt be noticed. I have two intel 660P. I have not had it very long. I just did a backup with clonezilla last week, from one intel to another, and it took about one hour to do around half a terabyte, if that means anything to you.