Hi Pierre,
You have mentioned that you have download/installed everything that was needed. Was the BIOS updated to A09 version? If not, please download and update the BIOS for Latitude E6330 from here and check if the fan noise and temperature is changed.
Note: Plug your computer to a good, working UPS before you update the BIOS. If you experience a loss of AC power or a significant voltage sag/spike during the BIOS flash, you will either have to buy a new BIOS chip or buy a new motherboard.
Do reply with results.