Overclocking
There are no different 2D/3D voltages implemented in this card. It will always run at 600 MHz core and 700 MHz memory.
Even though ATI's spec list states "Dynamic Voltage Control", there is no way to change the voltages via software. This means that if you need more juice you have to do a soldering voltmod.
We used ATITool to automatically find the maximum core and memory clocks (yes it works!) of our card.
In the end the card runs completely stable at 635 MHz Core (6 % overclock) and 824 MHz Memory (18 % overclock). While the core overclock is not spectacular, it is about what you can expect from any ATI card, because ATI factors in some stability headroom during production. The 18% memory overclock is quite nice and will sure give the card a healthy performance boost.