No why?
does that help?
iam also using vista 64bit and you are using 32
just tried amd fusion on Expert Mode and my temps never went over 30 @ 3.2ghz at 1.4v and it gave me an extra 700 points
I made my own profile for Fusion... For benching and gaming I put x on everything on the list but not AMD OverDrive (CPU) and ATI Catalyst Auto-Tune (GPU).
Though there is a possibility to OC your GPU to maximum benchable and then enable the auto-tune and try gaming. I am not sure if it will decrease GPU OC if the clocks are not gaming stable... But you should try it.
When benching, to be 100% sure there is no crap running on background, I quit any program I know that is not mandatory and only then put Fusion to action.
Edit: And AMD Boost (aka CPU Tweak) doesn't increase load temps. Only idle. But on extremely high clocks it can and will decrease stability. Some say it can even increase stability. Well that depends on the chip.