The Hyper 212+ is a very good cooler, but the Scythe Ultra Kaze 3000 fan is not a very good fan. It has very good static air pressure at 3000 rpm, but the static air pressure and cfm drop fairly quick, as the rpm's drop. It's a catch 22, in that at high rpm's it moves air so fast through a CPU cooler that it doesn't absorb much heat, and when you slow it down enough that you can stay in the same room with it because of the noise, it has very little static air pressure. I've tested a number of fans in push/pull on the Hyper 212+, and the best is a pair of these Arctic cooling 74 cfm, 600 to 1350 rpm PWM fans, by a wide margin. I now use a single one of these for my Corsair H-60, using the fan as pull, and mounted in the forward fan mount, in the top of my Corsair 400R case. You can use two of these on the Hyper 212+, and run them from the CPU fan header on the motherboard, as their is a splitter on the fans themselves. Nothing extra to buy and since they are identical, and both run at the same speed The radiator hangs from the pull fan, eliminating that large chunk of heat that the case exhaust fan normally has to deal with.
Arctic Cooling 6 Year warranty
Idle temps @ 73F Ambient temp Tmpin0= System, 1= Northbridge, 2= CPU
IBT (Intel Burn Test) @ maximum stress, 5 pass
With the H-60, I had to add a fan to the top fan position on the side cover, to cool the Northbride and VRMs. I bought an Arctic Cooling F-12, 74 cfm, 1350 rpm fan for that.
And a Zalman single fan controller, and set it to about 900 rpm.
As you can see, temps are no issue.
I'm guessing that you are using the auto settings on your motherboard, so what is your actual CPU voltage setting from your monitoring software? I don't know about MSI, but Gigabyte shows the normal CPU voltage as 1.475v, which is way too high for an FX-8320. I set it to 1.30v manually in the setup, with the LLC on High, and I get 1.312v at idle and 1.328v under 100% load. I have run it at 3.4GHz at these settings, but it's a little quirky, and I haven had much time to play with the settings yet It may well do 3.6GHz at under 1.4v.
BTW! Scythe USA has gone bankrupt, and is currently out of business. There's talk that they will be back in late 2013.