1 cpu configuration, Cpu configuration -15, Chapter 3 – Asus P8Z77-V LK User Manual
Page 77: Intel adaptive thermal monitor [enabled, Active processor cores [all, Limit cpuid maximum [disabled, Asus p8z77-v lk, Scroll down to display the following items

ASUS P8Z77-V LK
3-15
Chapter 3
3.5.1
CPU Configuration
The items in this menu show the CPU-related information that the BIOS automatically
detects.
The items shown in this screen may be different due to the CPU you installed.
Scroll down to display the following items:
Main
Ai Tweaker
Advanced
Monitor
Boot
Tool
Exit
Version 2.10.1208. Copyright (C) 2011 American Megatrends, Inc.
Adjust Non-Turbo Ratio
→←
: Select Screen
↑↓
: Select Item
Enter: Select
+/-: Change Opt.
F1: General Help
F2: Previous Values
F3: Shortcut
F5: Optimized Defaults
F10: Save ESC: Exit
F12: Print Screen
Back
Advanced\
CPU Configuration >
EFI BIOS Utility - Advanced Mode
Intel Adaptive Thermal Monitor [Enabled]
[Enabled]
Enables the overheated CPU to throttle its clock speed to cool down.
[Disabled]
Disables the CPU thermal monitor function.
Active Processor Cores [All]
Allows you to choose the number of CPU cores to activate in each processor package.
Configuration options: [All] [1] [2] [3]
Limit CPUID Maximum [Disabled]
[Enabled]
Allows legacy operating systems to boot even without support for CPUs
with extended CPUID functions.
[Disabled]
Disables this function.
Version 2.10.1208. Copyright (C) 2011 American Megatrends, Inc.
Adjacent Cache Line Prefetch
Enabled
> CPU Power Management Configuration
CPU Configuration
Genuine Intel(R) CPU 0 @ 2.90GHz
EM64T
Supported
Processor Speed
2900 MHz
Processor Stepping
306a6
Microcode Revision
4
L1 Data Cache
32 kB x 4
L1 Code Cache
32 kB x 4
L2 Cache
256 kB x 4
L3 Cache
6144 kB
Processor Cores
4
Intel HT Technology
Not Supported
CPU Ratio Range
16-29
CPU Current Ratio
29
Intel Adaptive Thermal Monitor
Enabled
Active Processor Cores
All
Limit CPUID Maximum
Disabled
Execute Disable Bit
Enabled
Intel Virtualization Technology
Disabled
Hardware Prefetcher
Enabled