A few days ago the creator of CPU-Z indicated that the supposed Gigabyte record where it reached 8GHz was actually false since it took advantage of a bug in an early version of the microcode used in the bios for Z690 motherboards, and therefore asked Gigabyte to verify the veracity of the record, something that the company obviously could not do. After this, the validation was marked as rejected on the CPU-Z page, as it did not reflect an actual result.
2/ We are now aware of a method that can be used to exploit a hardware errata on Alder Lake CPUs, despite the microcode fix added by Intel. It involves low-level control of the boot process. We’re testing a new internal CPU-Z revision able to detect that trick.
— Doc TB (@d0cTB) November 9, 2021
This was what declared “Doc TB”, the developer of CPU-Z about it on his Twitter account:
Even after several requests in recent weeks, we have not received any evidence that the CPU actually reached 8GHz. So far no other overclocker has managed to get close to that frequency and whoever published this result confirmed that they have not managed to reproduce it again.
We are aware of a method that can be used to exploit a hardware failure in Alder Lake CPUs, even after the Intel microcode fix. It involves low-level control in the boot process. We are testing a new internal CPU-Z patch capable of detecting this trick.
Doc TB accused Gigabyte of similar practices in the past
Using the new analysis algorithm on that old CPU-Z submission datas, we can now confirm that the real actual clock was 5683.94 MHz. That dump was already manually rejected soon after submission due a known exploit on AMD Vermeer CPUs at launch.
— Doc TB (@d0cTB) November 9, 2021
As indicated by Doc TB, this is not the first time that Gigabyte has carried out this practice of advertising false records. In the past, it took advantage of a Ryzen bug to indicate that it reached 6362.16 MHz on the Ryzen 9 5950X when the actual frequency was actually 5683.94 MHz and therefore it was not a record. Even if the records are removed from CPU-Z, the fake marketing images continue to circulate on the internet, which is a serious problem.
At the moment Gigabyte did not comment on the matter publicly or in front of Doc TB. Hopefully they will make a statement soon, and that they will constantly stop resorting to fake marketing.