SourceTrouble is, after the Radeon HD 5000 series had been in the market for while, folks started noticing some problems with Cypress' texture filtering, especially in textures with lots of fine, high-contrast detail. This problem wasn't evident in every case—heck, I never noticed it myself while gaming on a Cypress card—but it turned out to be quite real. At the press event for Barts, AMD Graphics CTO Eric Demers admitted that it was an issue with Cypress-era hardware.
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