Z690 hero paired with G.Skill 6000mhz XMP unstable configuration
Z690 hero paired with G.Skill 6000mhz XMP unstable configuration
To achieve this, you'd need to test several CPUs on that board and check their performance. It's a rare situation, and it would likely require replacing the CPU entirely. I'm not suggesting it's impossible, but it would be more challenging than necessary. You wouldn't be able to return the CPU for repair. They only promise a maximum of 4800MHz, so if they claim it can't reach 6000MHz, they'll probably just reject it and send it back.
I attempt to replace the CPU, though they warn it's not guaranteed. I can perform XMP settings without adjusting voltage, since I prefer not to contact them. I've increased the memory voltage and VDD to 1.4V, set VDVQ to 1.4V, and raised the CPU system voltage to 1.3V. So far it appears stable, but games still crash randomly.