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Articolo di AnandTech

https://www.anandtech.com/show/16959...e-november-4th

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What Alder Lake brings back to the table is BCLK overclocking. For the last decade or so, most overclocking is done with the CPU multiplier, and before that it was BCLK or FSB. Intel is now saying that BCLK overclocking has returned, and this is partly due to motherboard customizations in the clock generator. Every Alder Lake CPU has an internal BCLK/clock generator it can use, however motherboard vendors can also apply an external clock generator. Intel expects only the lowest-end motherboards will not have an external generator.

The use of two generators allows the user to overclock the PCIe bus using the external generator, while maintaining a regular BCLK on other parts of the system with the internal clock. The system can also apply voltage in an adaptive way based on the overclock, with additional PLL overrides.

On top of this, Intel is integrating more user-accessible telemetry for its cores, particularly the E-cores, and real-time frequency analysis. On top of this, users can adjust the memory frequency in the operating system, rather than having to reboot – this is an extension of the memory turbo functionality previously mentioned.

For regular users, Intel is also offering a one-click immediate overclock feature. On launch, the Core i9 will be supported and overclock the P-cores +100 MHz and the E-cores +300 MHz immediately. It sounds like Intel is confident that all CPUs will be able to do this, but they want it to be user selectable. Beyond that, I confirmed the tool does still void the warranty. Intel’s VP dismissed it as an issue, citing that the recent overclocker warranty program they canned had such a low pickup, it wasn’t worth continuing. I’d say that the two things are mutually exclusive, but that’s up to Intel.