"Looking at the basic spec sheet, you could be forgiven for thinking the Asus EAH4770 FORMULA is the same as every other Radeon HD 4770. The EAH4770 FORMULA is built around the ATI RV740 GPU, which is itself a direct descendant of the original ATI RV770 GPU. This means that the GPU core clock is still at 750MHz, and there's still 512MB of GDDR memory running at 800MHz."
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Original URL, circa 2009: http://www.pcstats.com/articleview.cfm?articleID=2426