Your cpu has built in turbo settings. 3.7 will kick in when only 1 core is working, 3.6 when 2 cores are working, 3.5 when 3 cores are working and 3.4 when all 4 are working. From my experience, the cpu never runs at 3.3. Also you can do a mild overclock on that cpu just by setting all of the turbo multipliers higher. you wont need to add voltage until you reach over 4ghz and even then you might not have to. Why not fill in your system. Im sure many will help you get the max from your system.