I've got a Connect 3D 9500 Pro with the arctic cooling VGA silencer - runs nicely at 350/300, however I've always had a problem with drivers.
Ati drivers are always a problem - take these latest 4.10s for example. no problem installing them, however If I try to increase the clock speed by any amount at all, my card will stop responding and VPU recover will reset the speeds to default 275/270.
Omega drivers ? No problem at all, always install without a hitch, no problem overclocking the card (temperatures permitting)
So why won't ATI standard drivers let me overclock ?!? any ideas !?!