I have 2 MSI 970s and the fans are super quiet. No issues here. Not sure what problems you are reading. The fan profile doesn't have them turn on until about 60C or so and the ramp up pretty appropriately with the temp. I love mine and run extremely well. I've OCed to 1300Mhz base clock on the GPU and 8012Mhz effective on the Memory. I didn't even try to push them harder with no issues. The MSI's do use Mil spec components and also upgraded the power delivery on the memory as well from the stock 1 phase to 2 phase. I am not sure about the G1, but have not heard they did anything beyond stock. It does use 6 phase for the GPU though. I am a fan of the MSI, my co-worker has the G1 and loves it as well. So you probably can't go wrong with either. They are considered the 2 top cards at this point. Though the Zotac AMP! cards are supposed to be REALLY good to. There is an Omega card and Extreme card. There are little reviews on them, but from what I have read they are really good overclockers are well. EVGA uses a virtually stock card and just puts a fancy cooler on it. They don't OC nearly as well as the others and you are paying the same for stock parts.