the 11.6 drivers will let you use aticonfig to set clocks outside the normal config range.
I guess I don't understand how. I've used 11.6 plenty, but I've never had success getting passed the 'normal' range. Is there a list of commands? I use things like "aticonfig --od-enable" "aticonfig --odsc=GPU,mem" "aticonfig --odgc" and so on, but I don't seem to be able to get that to work.
I guess it's possible that Catalyst 11.6 only breaks BIOS limits for older cards. With my two non-reference 5850s Catalyst 11.5 limits me to 900 MHz core clock and 1.0875V. With Catalyst 11.6 I can go to at least 1140 core clock (not pushed it further) and to a new limit of 1.3V. I can use 'aticonfig --odsc' to push the core clocks past the BIOS limit and didn't have to do anything special (used AMDOverdriveCtrl for the voltage). Perhaps it just doesn't work with the HD6xxx cards.