A new cooler shouldn't be the first thing on your mind.

Modern PC hardware has reached a point where performance isn't a concern on most machines. As long as you have a new 6-core processor and a $350–$400 GPU, you can easily power through 1440p gaming.

Repasting is cheap and easy to do, generally. I'd give that a shot. While you're doing that, make sure no dust bunnies have built a nest in the heatsink fins. Modern systems will park cores and do ...