https://community.intel.com/t5/Software-Tuning-Performance/Request-for-documentation-on-MSR-0x150-Overclocking-Mailbox/m-p/1748164#M8662 Hello,<BR /><BR />I am developing software to manage voltage offsets for Intel CPUs under Linux. I am writing here for official documentation on MSR 0x150, also known as the Overclocking Mailbox.<BR />As far as I know there is no pubicly available documentation on this topic as of yet, and all known information comes from reverse engineering efforts and academic security researchers (e.g. Plundervolt). This MSR is used in first-party tools such as Intel Extreme Tuning Utility (XTU), having official information on the topic would greatly help the implementation of power management features as well as security researchers in finding and reporting security vulnerabilities in Intel hardware.<BR /><BR />Thank you for reading my enquiry. Sun, 17 May 2026 08:04:28 GMT aleb 2026-05-17T08:04:28Z https://community.intel.com/t5/Software-Tuning-Performance/Request-for-documentation-on-MSR-0x150-Overclocking-Mailbox/m-p/1748164#M8662 Hello,<BR /><BR />I am developing software to manage voltage offsets for Intel CPUs under Linux. I am writing here for official documentation on MSR 0x150, also known as the Overclocking Mailbox.<BR />As far as I know there is no pubicly available documentation on this topic as of yet, and all known information comes from reverse engineering efforts and academic security researchers (e.g. Plundervolt). This MSR is used in first-party tools such as Intel Extreme Tuning Utility (XTU), having official information on the topic would greatly help the implementation of power management features as well as security researchers in finding and reporting security vulnerabilities in Intel hardware.<BR /><BR />Thank you for reading my enquiry. Sun, 17 May 2026 08:04:28 GMT https://community.intel.com/t5/Software-Tuning-Performance/Request-for-documentation-on-MSR-0x150-Overclocking-Mailbox/m-p/1748164#M8662 aleb 2026-05-17T08:04:28Z