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Turn your HD6950 into a HD6970 at no cost

For those of you who have bought a HD6950 recently, you may be rather pleased to hear that Techpowerup have a new mod to unlock it to HD6970 performance levels.

AMD has two methods of locking the shader count on all of their recent GPUs. The first one relies on fuses inside the GPU, or on the substrate – a mechanism similar to Intel’s multiplier locking. It is not reversible as far as we know. The second mechanism is the one we are interested in, AMD can configure the VGA BIOS in a way that it disables extra shaders, in addition to the ones disabled via the on-die fuses. This method is mostly used to create engineering samples or reviewer cards that match the target specifications. Usually production cards come with the shader count configured in the fuses, so that it can not be changed.

Apparently currently shipping Radeon HD 6950 cards from all manufacturers – which actually are all the same card with different sticker – have their shaders locked via the BIOS method, so we can exploit it easily.

Read how to perform the modification over here.

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