I've had this card for almost a month now and it's been great, with the fans starting, changing speed and stopping below 60C as they should and with fantastic performance all round. However, I just bought Rocket League and noticed an odd "breathing" sound from the card. Turns out that the game caused the fans to constantly rev up, immediately stop and then rev up again in an endless cycle. Even quitting the game and with the card cooled down left them doing this. Very annoying and will eventually put unnecessary wear on the fans. This would be a show stopping fault requiring RMA and puchase of a different model or brand if I hadn't been able to work around it with a new fan profile using the Zotac Firestorm utility. Should be able to do this with MSI AfterBurner too. Anyway, some frantic Googling and Reddit posts later, it turns out that this is a design fault with this card which Zotac has failed to address or even acknowledge (so nice of them). There is no BIOS update on the Zotac website for any of their cards, either. This is a card that used to sell for over £800 before the 1080 Ti came out, so this isn't acceptable. I bought it for a much more reasonable £550 off Amazon. The problem seems to be that it can't maintain a fan speed below 1000rpm, therefore setting a fan speed below 30% results in this cycling. This video I found demonstrates the problem and notice that only two fans are spinning up, just like my card. Here's the default fan profile which you can see actually specifies a 10% fan speed even at 0C, which is kinda weird as the fans switch off below 60C. Here's my custom fan profile. Notice how I've set the fans to switch off below 60C, as the card is supposed to do anyway. This has fixed the problem for me and I can now play Rocket League in peace. The card will actually run hotter with this profile, so I may adjust it in future, depending on how it goes. Any suggestions on improving this profile are welcome. @eidairaman1 You'll be interested in this issue and might want to look out for it if you buy a Zotac AMP! Extreme card. @W1zzard You might want to check for this problem when you review the Zotac GTX 1080 Ti AMP! Extreme. If you still have the 1080 version of this card, then you might want to check for this fault and update your review, or confirm the problem here.