Better than reference, says Sapphire.
At Computex, Sapphire shows us its Radeon HD 7970-based Vapor-X 6GB, which gets it name from its dual-fan vapor chamber cooling. It has an eight phase VRM for the GPU and is made from a 12 layer PCB and Black Diamond Chokes, which allow the card to run cooler and more efficient.
apphire claims that its product has improved stability, more overclock room and lower peak temperature compared to the reference model. This, of course, makes room for a button for instant overclocking to 1100 MHz for the GPU and 6000 MHz for the memory.