Be careful with what you expect to happen with a cooler. If you look at the temperatures the CPU itself reports for its four cores, those are fluctuating always. The second something stressful happens to the CPU, the temperatures instantly jump up, and they instantly go back down after it stops. If you click around on the desktop, start and close programs, click around in the web browser, you'll see it moving a lot. There's nothing you can do about that. A strong cooler won't keep those temperatures constant.
Here's what Speedfan recorded about my CPU on the desktop, browsing amazon and stuff:
It's jumping between 28c and 50c (though this is overclocked so might look less dramatic on stock speed).
Here's what running the Cinebench CPU test looks like:
It goes up to 60c (again, it's overclocked). That's also what I'll see in games. A few degrees might get added when the graphics card heats up the case.
Originally Posted by AppJak
I've been looking for a while, but I'm not sure what to buy. There are no names that pop up consistently, except the Hyper 212.
You hear the Hyper 212 mentioned a lot because it's the safest choice. There are a lot of coolers out there that are a bit of a dud in performance for whatever reason. If you lose 5c compared to a different cooler, that means a lot for coolers as they are pretty close in performance anyways. You'll pay $60 for a random cooler but the $35 Hyper 212 Evo will be very similar performance and you'll pretty much will have lost $25 for no good reason.
The Hyper 212 plus and evo are a safe choice, the rest of Coolermaster's coolers you should probably ignore as they seem suspicious price/performance. You could see what you can get from Thermalright or Zalman with a good price. Both can build very solid coolers that might be cheap.
Look at Zalman CNPS10x Optima or CNPS10x Performa or CNPS14x. You might get those for a good price. One expensive Zalman cooler got mentioned as working fine on your board in its thread here on ocn, and those cheaper Zalman coolers might still be using the same mounting system.
For Thermalright look at True Spirit 120 or True Spirit 120M or True Spirit 140 or HR-02 Macho. Thermalright's mounting kit should be easier to use (except for HR-02 being a monster), but all mounting kits should be easy to use for you as you'll have to disassemble your PC anyways and take your board out of your case.
The coolers with 140mm fan size might be interesting as they will be quiet while still helping the case fans in their job a lot.