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Artikel @ Anandtech
It should also be mentioned that AMD has implemented a hidden feature in Revision E processors, namely additional memory ratios that can be implemented in BIOS. We saw a Revision E chip mounted on the Abit Fatal1ty AN8 motherboard. Adding the new processor gave the additional options of 433, 466, and 500 to the available memory ratios. This has to be coded in the BIOS to be available, but the new asynchronous ratios are a feature of the Revision E Memory Controller.