Intel Core i5-2400S Quad-Core Processor 2.5 GHz 6 MB Cache LGA 1155

purchase many processors but I always buy Intel and so far I’m happy with this unit. From my basic research it appeared that this was a good balance of speed and energy usage. I wanted to build a 24/7 machine that was powerful but very quiet. On this machine I have a medium sized case fan and, what I now realize is and oversized CPU heatsink/fan, and all of the fans appear to be running on their lowest RPM settings and provide full cooling at 100% usage.