If you've got a shiny new HD 4800 Series card and would like to see how far it clocks up without the limitations of Catalyst Control Center's built-in OverDrive tool, a new version of AMD's GPU Clock Tool is out with support for the new family.

Download: AMD GPU Clock Tool 0.9.8

[0.9.2] Nov 30, 2007
- RS780 clock support
- external thermal controller support

[0.9.3] Dec 15, 2007
- added support for G781-1 thermal controller
- added UVD activity status and PCIE status report

[0.9.4] Feb 25, 2008
- fix crossfire slave clock change issues including R680 in newer drivers
- engine/memory clock to show what is currently used by hardware before new clock is applied

[0.9.5] Mar 3, 2008
- fix engine/memory setclock issues on RS780 with production driver installed
[0.9.6] Mar 14, 2008
- fix application stability issue on certain RV670 designs

[0.9.7] Apr 30, 2008
- add support for RV770 and RV730

[0.9.8] June 10, 2008
- fix RV770 TSS reporting in thermal sensor page