Aeolus Gamer Storm designed a variant of its Dracula GPU heatsink for AMD Radeon HD 7970 graphics card as TPU reported today:

The heatsink is designed to handle thermal loads of up to 250W, when outfitted with fans. The heatsink design consists of a nickel-plated copper base (this particular variant has a circular bump where the GPU die makes contact), with the appropriate mount-hole spacing for HD 7970. Through this base, six 6 mm-thick nickel-plated copper heat-pipes pass, the opposite ends of these heat pipes pass through two aluminum fin stacks. Tests show that when fitted with two 80 mm fans spinning at 1,800 RPM, the Dracula keeps load temperatures of the HD 7970 about 35 degrees Celsius cooler than AMD reference fan-heatsink.