Advanced Micro Devices on Wednesday introduced the Radeon R7 and R9 graphics cards, featuring the company's "Hawaii" micro-architecture in their graphics processing cores. Five chips were unveiled, with prices ranging from $89 to $380. AMD also brought out Mantle, an application programming interface for coding video games to work with AMD PC chips. Meanwhile, the company has reduced pricing on its most powerful AMD FX-9000-Series processors.

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