well,I think it cant hurt,considering that the "K" model is just like 15 more US dollars (on Newegg,atm),give or take. Not a big difference and you can always replace the stock cooler with something better on down the line,should you decide to OC in the future. I am not sure on my future build if I would need to upgrade the cooler,as my CM N600 will have a total of 9 fans,including a 200mm beast on the right side. I will also likely get the 4690k and may OC just a little. I like the option,at the least.