It looks like Radeon HD 7970 and HD 7950 won't share a common design after all, as press-shots of the HD 7950 suggest. The HD 7950 is also said to use a different PCB design from the HD 7970, diminishing any chance of the HD 7950 being "unlockable" to HD 7970 using a BIOS update. The reference design card uses a cost-effective heatsink with internal ventilation using a top-flow fan, and not a fin-canal design the HD 7970 uses, which pushes hot air out of the case.
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It looks like Radeon HD 7970 and HD 7950 won't share a common design after all, as press-shots of the HD 7950 suggest. The HD 7950 is also said to use a different PCB design from the HD 7970, diminishing any chance of the HD 7950 being "unlockable" to HD 7970 using a BIOS update. The reference design card uses a cost-effective heatsink with internal ventilation using a top-flow fan, and not a fin-canal design the HD 7970 uses, which pushes hot air out of the case. »read more
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