I'm also not very happy with my card and the Xtreme Engine:
- 50% of the time, the Xtreme Engine crashes when starting Windows and I have to enable it manually afterwards.
- The fans make a weird noise when they start to spin (almost like accessing a very old harddrive), also the fan profile is not stored within the card, so the Xtreme Engine has to run all the time.
- I don't know what the F2 update actually did, I still have some moments, when the fans spin just for a split second and then stop again (making that weird noise I mentioned above).