The release date of these GPUs is still unknown as lately there have been various rumors suggesting that AMD has postponed the launch of the Radeon HD 7000 product family to 2012.

According to these reports, the main culprit is TSMC's inability to achieve the 28nm yields required for a 2011 launch, but AMD could also be facing some fabrication issues as the company didn't have a pipecleaner for the 28nm process as it was the case with the move to 40nm.

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