Unfortunately the device isn't compatible with the latest graphics cards, it only supports the following ones:
ATI: X1950, X1900, X1800 seriesAccelero S1 features 4 thick copper heatpipes which connect directly from the GPU core. The heatpipes with sintered powder wicks provide ultimate heat conductivity. Heat from the GPU is rapidly dissipated through 32 fins that extend beyond the height of the graphic card. Optimized fin design allows better air flow thus removing the heat more effectively. Together with the bundled RAM heat sinks and voltage regulator heat spreader, Accelero S1 provides an all-round passive solution that achieves the best cooling performance.
nVIDIA: GeForce 7950, 7900, 7800, 6800 series
Arctic also provides some temperature figures from the Radeon X1950 Pro:
The Accelero S1 ships with a 6 years warranty and will be available for $29/24EUR (without VAT).
Accelero S1: 63°C Accelero S1 + Turbo Module: 49°C Radeon X1950 Pro stock cooler: 67°C