Hi,
Default fan settings:
My 480's get hot, it's expected. The fan noise can be controlled. The default fan setting makes the fan spin loud/fast when the GPU is erly 90 degrees C. In many games the GPU gets to 90's and the fans stay loud for ages, alternating a little, dropping speed alot when a level is loading, then when it's back to real-time rendering the fans are back to high speed and loud.
My custom fan settings, results are from playing Bad Company 2 maxed + NVIDIA 3D setting enhancements, V Sync'd, 1920 x 1080p:
My custom fan setting findings led to geting a noise level thats tolerable with high fan speed. 70% fan speed suits me, my case has sound proofing. Now the fans run at 70% from a low temperature up to a v high temperature. The GPU rarely hits 90 Degrees. At first it's very slow to heat up. When the cards are loaded for ages the 2 480's alternate between 72-89 degrees mostlty, 79-82 more, and if the GPU spikes to the 90's it's heat is quickly dispersed.
not allowing the GPU and heatsink to store lots of heat in the begining is what helps.
The 480's are at NVIDIA's refernce stock frequencys set with MSI's Afterburner. The first card is factory overclocked (I've reduced its frequency's) and on the OASIS map it runs around 6-7 degrees hotter than the second 480. Both cards have back-plates. The EVGA ran at 78 degrees and the POV (stock card) ran at 72 degrees. On the HARVEST DAY map, we had 2 tanks working together with engineers firing at us etc, the cards max temp were 82 & 76 degrees C
Here is a pic of my MSI's Afterburner custom fan settings:
Try similar settings with your card, first know your GPU's thermal limit reccomendation from AMD
For long time benchmarking etc this idea isn't suitable
EDIT: I played LOST PLANET 2 a couple of days ago with the default fan setting. Chapter 5, level 1 and the temps were around 89-93 degrees for both cards.
Now I'm usin the custom profile, I've just done Chapter 5, level 1 and am now on level 2. The temps
70-74
Max temp i saw on GPU 1: 86
Max temp I saw on GPU 2: 79
Ron if you wana play LOST PLANET 2 with me message me, I'd like that.
Screen shots:
At the bottom of each picture is MSI's afterburner monitoring readings.
MSI's moniotring readings are in this order: GPU temperature, GPU usage, cooler fan speed, GPU core clock frequency
The game is more demanding in the movie clips and this shot is from a boss ending movie.