Overclocking
To find the maximum overclock of our card we used a combination of Rivatuner, ATITool and our benchmarking suite. In order to enable overclocking of the G94 cards using Rivatuner, you just edit rivatuner.cfg and add the device id in our case "0622h" to the G92 section.
The final overclocks of our card are 789 MHz Core (21 % overclock) and 1066 MHz Memory (18 % overclock). Both are nice overclocks, with memory being a bit limited due to the missing memory chip cooling on the card.
Temperatures
The idle temperature is amazingly low, a quieter card with higher temperatures would certainly benefit the user more. Under load the temperature is still really low proving that the Zalman VF-1000 is working really well.