toprock :
Be wary of the Sapphire, it has three smaller fans, smaller fans create more noise. My 280x Sapphire Toxic sounded like a vacuum cleaner when gaming. MSI Twin Frozr difference is like night and day.
Well after gaming solid for about 4 hours last night and using MSI Afterburner to monitor the card, the temp of the Tri-X never went above 74 degrees the fan speed never went above 40% and the GPU was mostly being used at 100%. I could here the CPU fan (Coolmaster V8) occasionally during the loading screens between maps now and again but could not hear the Tri-X. My Coolmaster HAF case is sitting on the floor under the desk next to me. As I type this I stared Unigine Valley benchmark (there is no music or sound effects) and am leaving it running until the fans get to 40%...
I can hear the CPU fan, it's not very loud at all, but I can not hear the Tri-X. There is a faint over all noise but it sounds like gentle air moving over something, it is a very subtle, low, gentle, sound. The sort of sound you would hear that lets you know your system is on but is in no way distracting. I have one 200mm fan on top of case (that came with case). I have 2 x
http://www.overclockers.co.uk/showproduct.php?prodid=FG-061-AK&emcs0=2&emcs1=Produktdetailseite&emcs2=FG-057-AK&emcs3=FG-061-AK case fans that are practically silent. Also one 120mm case fan in front of case that came with case as well.
Bare in mind that I changed from 2 x Sapphire 5870HD cards (generic coolers) and they would be loud when both at 100% load.
I have previously owned, 8800GTX and 7800GTX and you could hear them both at full load.
Currently the room is so quiet I can hear the fridge running in the kitchen one room away from me.
I have now put BBC NEWS live on, I put the volume all the way down to 1, I can barely hear what the presenter is saying and can not hear the Tri-X (Valley is still running).
I would say the fan is so quiet that I am sitting hear now wondering if I should buy different fans for my V8 CPU cooler...