Then you've done your best. If you are still not satisfied, you can sell your cpu free on craigslist and try another one. I use the i3 530, and it's running stable with the Intel heatsink at 3.67. At 4.07 it runs but too warm for the Intel heatsink. I settled for the lower overclock rather than buy a pricey heatsink. I got both the board and cpu for $100 after rebate at frys.