The smaller 40nm design of the Radeon HD 4770 allows it to operate at 750MHz, which impressively is the same core frequency as the Radeon HD 4870. The core configuration features 640 (128×5) SPUs, along with 32 TAUs (Texture Address Units), and 16 ROPs (Rasterization Operator Units). The memory works at a frequency of 800MHz [...]

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