I'm trying to overclock my new HIS HD 6750 DDR3 model, and I cant change the fan speed in any way. Its simply just doesnt show up in Catalyst Control Center, its greyed out on MSI Afterburner, Ati Tray tools etc. I emailed HIS support about this and they told me the Fan speed is fixed and cant be changed. I bought this card so I can overclock and save a few bucks but I cant do much with a fixed clock. Is there any way around this? Any way to increase fan speed?