Check out PowerColor's upcoming Radeon HD 7950 PCS. Custom PCB, and updated PCS (professional cooling system) cooler design, which uses a slightly larger aluminum fin-stack heatsink than the one found on previous generation PCS coolers.
Heat is drawn from the GPU and conveyed to this fin-stack a number of nickel-plated copper heat-pipes (we count four). The heatsink is ventilated by two 80 mm fans. The card appears to stick within the confines of two expansion slots.
Click on the thumbnail.