With the TES 1326 Infrared Thermometer literally in hand we found ourselves getting real-world temperatures from the products we test at load (3D clock speeds).
There are two places we pull temperature from - the back of the card directly behind the core and if the card is dual slot and has an exhaust point we also pull a temperate from there, as seen in the picture.
In the heat department we find it sits around the same as a 3870 while the single slot 8800GT continues to run very warm indeed. It's no surprise temperature is considerably up compared to the older 8800GTS 320MB, simply because of the amount of power on offer from the new G92 based version.
Pulling out the TES 1350A Sound Level Meter we find ourselves quickly yelling into the top of it to see how loud we can be.
After five minutes of that we get a bit more serious and place the device two CM away from the fan on the card to find the maximum noise level of the card when idle (2D mode) and in load (3D mode).
Like you would expect, the bigger fan has helped keep noise way down. It sits in line with the older 8800GTS 320MB and the new 3870. The smaller fan on the 8800GT really manages to squeal away creating quite the noise indeed.