It's been noticed that on a lot of the latest 8800GT's with stock cooler the fan is larger.
It's gone up from a 13 bladed 65mm fan to a 15 bladed 75mm fan.
At first it was thought a coouple of manufactors had designed an new cooler however more and more are now appearing.
Expreview.com - Extra Hardware News Report! » Blog Archive » [Comparison] 8800GT’s new stock cooler is cool n’ quiet
Nvidia are denie any changes and say these are aftermarket coolers, yet the list of makes with these enlarged fans is growing and all appear to be identical except for labeling/branding
Expreview.com - Extra Hardware News Report! » Blog Archive » Join our project, show your new 8800GT stock fan to the world![Final update]
I've only just found out about this when I spotted the Leadtek 8800GT on Scan's site which had a picture of the enlarged fan, I thought it was a Leadtek improved cooler at first, so I dug around and found out about this bigger fan and now I'm just spreading the word.
The cooling differnce seems to be minor, around 2c less, however it spinns far slower and is much quieter, so you whack the fan up higher while still being quieter.
The stock 8800gt cooler is now starting to look better to me and may even be worth while. (it has been a major factor putting me off so far, although the price is still a bit too high for my likeing)