Full speed most of the fans are noisy. If you enable the bios fan control for the cpu fan you should do ok with noise level on the stock intel fan. You will hear the fan spinning up and down as you load the cpu but overall you will have less fan noise.

You can also plug in your case fans to the motherboard (if they are 3 pin) and let the bios control them, it will be based on MB temp instead of cpu temp. This will really cut down on noise level.