OMEN MAX - undervolting not possible

[MB__AC]

I just bought an OMEN MAX 16 with Intel Ultra 7 255HX CPU. Chosing this laptop with this CPU was no coincidence - I wanted to have control over the CPU voltage to be able to undervolt is (so it would be cooler and consume less power). 
Unfortunately I cannot undervolt it via HP Omen Software (the undervolt - tab does not show) and also not via BIOS oder Throttlestop. 
I feel somewhat cheated by hp and I am thinking about returning the Laptop and buy another one from a competitor. 

Is there any solution to be able to undervolt my laptop?

[NonSequitur777]

@MB__AC,

Welcome to our HP Community forum!

Your concern is fully understandable -many performance enthusiasts prefer undervolting to optimize thermals and efficiency. Unfortunately, Intel's Core Ultra 7 255HX (15th Gen Arrow Lake-HX) no longer supports voltage control. The undervolting restrictions are enforced at the hardware and firmware level due to Intel's Plundervolt security mitigation.

Because of this, HP OMEN Gaming Hub, the BIOS, and third-party tools such as ThrottleStop or Intel XTU all disable voltage control for these CPUs. Mind you, this limitation is not HP-specific; it's consistent across most OEMs that follow Intel's security guidance.

Available options:

• You can still adjust power and thermal behavior by customizing the Performance, Balanced, or Eco modes in OMEN Gaming Hub → Performance Control.

• Keeping your BIOS and OMEN Gaming Hub up to date ensures the latest thermal and fan-curve optimizations.

• Some users find custom fan curves or repasting with high-quality thermal compound and using a cooling pad helps improve cooling without needing voltage control.

However, if it is the case that undervolting support is a critical requirement for you, you might consider systems built around unlocked desktop-class CPUs (e.g., K-series) where voltage control remains accessible in firmware.

I realize this isn't exactly the answer you were hoping for, but HP's implementation does align with Intel's platform-level protections on these newer CPUs...

Kind Regards,

NonSequitur777

[MB__AC]

Thank you for your effort and the detailed response. During my research before purchasing the laptop, I found out that mobile Intel CPUs with an “X” at the end are suitable for undervolting. On the internet, there are also various reports and screenshots from people who own laptops with the 255 HX and successfully run the CPU with lower voltage using ThrottleStop. How is that possible if Intel itself prevents undervolting? I don’t understand that.

[NonSequitur777]

@MB__AC,

What I meant to say is that HP follows Intel's guidance by disabling voltage control in their OMEN Gaming Hub and BIOS, as confirmed by various HP support community posts.

Fact remains is that an HP OMEN MAX 16 with an Intel Core Ultra 7 255HX CPU cannot be undervolted. As mentioned, this is due to a security mitigation from Intel called Plundervolt, which locks voltage control at the hardware and firmware level on these newer CPUs, including the OMEN Gaming Hub and the system BIOS.

Kind Regards,

NonSequitur777

[MB__AC]

Okay, thanks for the answer and the explanation. I understand that it is more an "Intel-issue". 

[NonSequitur777]

@MB__AC,

Your OMEN MAX still rocks, though!

Kind Regards,

NonSequitur777