What kind of laptop should I get? - 1

Need a Really Really fast computer, like a i7 6th gen processor, non-touchscreen, doesn't matte rany brand? I also heard that ram is also a big part of the computer's fastness? Can someone list a computer brand that fits the requirments and is a good security computer, hard to hack (like linux or mac or chromebook)? Need for school, work, and just sometimes need for really fast games, no lags?

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