Sapphire's single-slot Radeon HD 3870
Unique cooling solutions were all over the show, including Sapphire's single-slot Radeon HD 3870:
Cooled using a technique similar to that used by heatpipes, Sapphire's Vapor-X heatsink allows for a slimmer-than single-slot design to be implemented on the Radeon HD 3870. With such a low profile cooler, sticking four of these on a motherboard is possible.
Sapphire also had a passively cooled Radeon HD 3870 on display:
The passively cooled 3870 in action
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