By the way, Beta drivers are exactly that: Beta. Don't have to install them.
Except for sometimes, like Oblivion you DO have to install them. Still no official WHQL certified driver with Oblivion support yet. And this is typical of nV's driver strategy, leak a ton of Betas, let people test them and then decide which one to finally get WHQL certification on after the masses have risked their hardware.
I typically don't. CCC is a required tool that eats more resources than necessary (which is one of my complaints about Windows XP, too)
Like Cleeve already mentioned it's not required, and never has been. The drivers are a separate package and you can get most feature of CC in AtiTrayTools. Even the latest standalone drivers work with the OLD control panel, so you can work without CCC.
Coincidentally you still haven't proven this. This is based off of.. some information I guess, but at least Clue69Less had a tinsel test to go off of.
Great for PCs built by Santa I guess.
Want proof, here you go;
The nVidia design-
http://www.xbitlabs.com/articles/video/display/geforce7800gtx512_4.html
"The fan being of the axial design, most of its air stream is directed downwards, to the cooler’s base, and then the base with the casing make the air flow to other directions. Part of the air stream that goes leftwards cools the left heatsink and is exhausted to the outside of the system case, while the other part cools the right heatsink as well as the heatsink on the power circuit elements."
The ATi-
http://www.xbitlabs.com/articles/video/display/radeon-x1900xtx_6.html
"The cooling system of the RADEON X1900 XT/XTX is the same as the RADEON X1900 XT’s: a blower is pumping air from inside the PC case and into the thin-ribbed copper heatsink with a massive sole and is then exhausting it to the outside."
well, the cooler the card, the less warm the case is.
Unless you're measuring chip temperature, but the heatsink on one card is removing that heat, and the HSF on the other is spreading that heat between in and out. The one that exhausts all heat has the least impact on case temps.
The exhaust air will be far more of a concern than conduction across the card to the case or radiation from the card.