Saw one at a pawnshop today for 899$ It had 16gb ram non k version i7 8700 and a gtx1070. They did not let me open case so no clue the brands psy wattage. Is this a good deal for 899? I have a 6700k with 8gb ram. My system needs a new gpu/ psu. Worth the upgrade? Hoping to game at 1440p 144hz when i get monitor money buy 1080 144 is ok also? Will i get good frame rates? I dont really overclock now... either