AMD has unveiled its latest video cards both running Radeon HD 7700 series GPUs. The new video cards include the HD 7770 and HD 7750. Certainly, the most interesting of the new video cards is the HD 7770 GHz edition, promising best in-class entertainment experiences for gamers. The most interesting feature of the HD 7770 GHz edition is that AMD claims it to be the first GPU to operate at 1 GHz reference clock speeds.
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