My cousin got a dell XPS 8700 a little while ago. Shortly after they threw a PNY 970 in there for gaming. It does well, but the stock cooler just isn't enough. I gave him a 120mm AIO but it won't fit in this dell case. For his coming up birthday, I'm planning to get him a corsair carbide case, and his dad will get him a new motherboard. What's are some good choices to look at for a 4th gen i7-4790 at about $150 or under?