I just recently put a Fx8150 in my case. It seems like it idles kinda high but doesn't appear to go up much in temperature while playing games. I don't bother overclocking and probably never plan to. My setup is:
Case: Thermaltake Dokker Case
MB: Asus Sabertooth 990fx
CPU: AMD 8150fx
GPU: ATI Radeon HD 5870
RAM: 2x4gb G.Skill Ripjaws
PS: Corsair GS700
I have 2 fans coming in and 2 fans out. I'm using the stock cooler that came with the CPU @ 3086rpm . At idle right now looking at temps in Asus Thermal Radar program I'm at...
CPU Temp: 47c
CoreTemp seems to read some lower temps saying CPU#0 36c with a min/max of 33c/45c. CoreTemp also says it has a VID of 1.4125v, which from what I've read is better then it being lower if that is true? It apparently has something to do with how much it leaks?
Now while playing Battlefield 3 @ 1080p on Medium I notice the temperature in Thermal Radar stops and stays around 58-59c. From what I'm reading this CPU safety net is 62c so is my CPU alright and cooled enough? Should I look at getting a different air cooled CPU cooler?
Any thoughts/opinions are welcomed. If you need more information let me know.
Because you are running 8 cores, you are going to be running "warm" with the stock HSF. An aftermarket HSF will help considerably in your case but other than the fan noise from the CPU fan, I don't see anything of major concern there. The addition of an aftermarket HSF, although helpful is not a neccessity (it will cut temps some and noise considerably).
For air, you can't beat the price or performance of a Hyper 212 EVO by Cooler Master. If you want to try a water cooling loop, I have a Corsair H80 and I love it, and the H100 by Corsair gets great reviews.