When you translate "Family 6, Model 58" using Intel's internal classification system, it refers to the microarchitecture.
| Component | Value | Interpretation | | :--- | :--- | :--- | | | GenuineIntel | Intel Corporation | | Architecture | Intel64 | 64-bit (x86-64) | | Family | 6 | P6 Microarchitecture (Core/Xeon lineage) | | Model | 58 | Ivy Bridge (3rd Gen Core) | | Stepping | Varies (often 9) | Revision of the silicon | | Release Era | 2012-2013 | 22nm process technology |
However, Ivy Bridge lacks some newer power features like HWP (Hardware P-states) and C8/C9/C10 found in Skylake and later. acpi genuineintel---intel64-family-6-model-58
However, confusion exists because several models share family 6:
At first glance, it resembles a fragment of a broken database entry or a debug string left in a hurry. However, for system administrators, firmware engineers, and Linux power users, this string tells a complete story. It is a handshake between three critical components of modern computing: (Advanced Configuration and Power Interface), the CPUID instruction, and the Linux kernel’s x86 architecture code . When you translate "Family 6, Model 58" using
: In hexadecimal notation, this is Model 3Ah . This specific model number exclusively covers standard desktop and mobile consumer chips built on the 22-nanometer Ivy Bridge microarchitecture . The Architecture Behind Model 58: Ivy Bridge
The ACPI _PSS object returns a table of supported P-states (frequency/voltage pairs). For Intel CPUs, the OS may supplement or override these with its own driver (e.g., intel_pstate ), but the ACPI values serve as a fallback. While the dashes are anomalous
Stands for Advanced Configuration and Power Interface. It’s the industry standard that allows your operating system (like Windows) to communicate with your hardware to manage power and discover devices. GenuineIntel:
Understanding each segment—ACPI, vendor string, 64-bit capability, and family-model-stepping—is a valuable exercise for any systems engineer working on x86 power management, hypervisors, or kernel debugging. While the dashes are anomalous, the underlying hardware is solid, well-documented, and widely deployed.
If you have an Ivy Bridge system and notice cores stuck at 800 MHz, the issue is not this string, but rather ACPI thermal or power limit. Check: