Hello Kapt'n,
The 8800GT is indeed a G92 chip. I've just installed 2 brand-new 8800GTS cards myself but so far the scores I'm getting are not what I expected. The cards I got are also factory oced (ASUS EN8800GTS TOP) but the performance is not that great. I've just run 3DMark06 and it gave me just 14.391 3DMarks. That's only a 28% increase over my old GTX.
I'm not surprised that your alfa dogs run cool. One of the things that made me go for 2 G92 cards instead of adding another GTX was power consumption. I was a bit worried that my 850W Galaxy would be on its limits with 2 GTX cards, 8 HDs and the rest of my stuff. In case that my PSU would prove unsuitable for the task I would have had to replace it along my UPS too (APC Smart-UPS 1000VA). I do not know what I will be able to do with my scores but I know that I won't have to worry about power consumption any more. The 2 GTS cards only need just a bit more power than my old GTX.
The addition of a 2nd card did not affected my noise levels thanks to the bigger fans. It was quite hard to install the 2nd card though as it would interfere with the SATA cables at the bottom of the board, not to mention the USB cables, or the firewire cable, or that cable with the switch I'm using to clear CMOS, or that other one.......
Bottom line. Hard to install, poor scores so far, low power consumption, good temperatures, low noise.