Acpi Genuineintel---intel64-family-6-model-58 -

: This is the broad category for almost all modern Intel microarchitectures (P6 through the current Core series).

The kernel uses this to apply vendor-specific errata, feature detection, and power management policies. When you see genuineintel (often lowercased in logs), it means the system has positively identified an Intel CPU. acpi genuineintel---intel64-family-6-model-58

The ACPI standard defines processor performance states (P-states) for active performance and C-states (C-states) for idle power savings to prolong battery life and reduce heat. The operating system uses ACPI tables to understand which C-states a CPU can enter. Your Intel CPU (Family 6, Model 58) works with the kernel's ACPI processor driver to manage these states efficiently. For example, the intel_idle driver in Linux relies on these ACPI mechanisms to manage C-states. The acpi flag present in /proc/cpuinfo indicates your kernel has ACPI power management support for this CPU. : This is the broad category for almost

However, Ivy Bridge lacks some newer power features like HWP (Hardware P-states) and C8/C9/C10 found in Skylake and later. For example, the intel_idle driver in Linux relies

This article will dissect every part of this identifier, explain how it appears in system logs, what hardware it refers to, and why it matters for OS developers, power management engineers, and Linux enthusiasts.