Leo-Patch 1.6 · Q1HY MoDT · Observations 14 October 2026
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Overview / Manual / OverClocking Performance Menu CPU, Power, Memory
OverClocking Performance Menu
OverClocking Performance Menu firmware setup page decoded from AMI HII/IFR resources.
Form ID 0x27ed
Records 20
Path Setup / Advanced / OverClocking Performance Menu / Setup / Advanced / Advanced / OverClocking Performance Menu
Record 1177
OverClocking Feature Firmware Value
Performance Menu for Processor and Memory.
Opcode OneOf
Question ID 0x27e6
VarStore CpuSetup
VarStore GUID B08F97FF-E6E8-4193-A997-5E9E9B0ADB32
Offset 0x1d9
Width 1 byte(s)
Range 0 to 1 step 0 Permalink
Record 1178
UnderVolt Protection Firmware Value
When UnderVolt Protection is enabled, user will not be able to program under voltage in OS runtime.
Firmware help text When UnderVolt Protection is enabled, user will not be able to program under voltage in OS runtime. Recommended to keep it enabled by default. Enabled: Allow BIOS undervolting, but enable UnderVolt Protection in Runtime. Disabled: No UnderVolt Protection in Runtime.
Opcode OneOf
Question ID 0x425
VarStore CpuSetup
VarStore GUID B08F97FF-E6E8-4193-A997-5E9E9B0ADB32
Offset 0x381
Width 1 byte(s)
Range 0 to 1 step 0 Visibility / conditions {"condition_id": 433, "type": "SuppressIf", "offset": 366981, "expr": ["EqIdVal QuestionId: 0x27E6, Value: 0x0", "EqIdVal QuestionId: 0x1269, Value: 0x0", "Or"]} Permalink
Record 1179
Per-core HT Disable Firmware Value
Numeric firmware value from 0 to 255.
Opcode Numeric
Question ID 0x426
VarStore CpuSetup
VarStore GUID B08F97FF-E6E8-4193-A997-5E9E9B0ADB32
Offset 0x230
Width 2 byte(s)
Range 0 to 255 step 1 Visibility / conditions {"condition_id": 434, "type": "SuppressIf", "offset": 367034, "expr": ["EqIdVal QuestionId: 0x1268, Value: 0x0", "EqIdVal QuestionId: 0x27E6, Value: 0x0", "Or"]} Permalink
Enable/Disable WatchDog Timer.
Firmware help text Enable/Disable WatchDog Timer. Note: This option is ignored on debug BIOS.
Opcode OneOf
Question ID 0x427
VarStore PchSetup
VarStore GUID 4570B7F1-ADE8-4943-8DC3-406472842384
Offset 0x24
Width 1 byte(s)
Range 0 to 1 step 0 Permalink
Record 1181
CPU BCLK OC Frequency Firmware Value
CPU BCLK Frequency in 10kHz increments.
Firmware help text CPU BCLK Frequency in 10kHz increments. Specifies new CPU BCLK frequency to be applied. Frequency is rounded to nearest valid value. Allowed range is limited by the Max/Min supported frequencies. Changes are not applied until settings are saved and platform resets. Example: For 125.70MHz, enter 12570.
Opcode Numeric
Question ID 0x428
VarStore CpuSetup
VarStore GUID B08F97FF-E6E8-4193-A997-5E9E9B0ADB32
Offset 0x2f7
Width 4 byte(s)
Range 0 to 50000 step 1 Visibility / conditions {"condition_id": 435, "type": "SuppressIf", "offset": 367124, "expr": ["EqIdVal QuestionId: 0x27E6, Value: 0x0"]} {"condition_id": 436, "type": "SuppressIf", "offset": 367132, "expr": ["EqIdVal QuestionId: 0x1201, Value: 0x1"]} {"condition_id": 437, "type": "GrayOutIf", "offset": 367140, "expr": ["EqIdVal QuestionId: 0x1257, Value: 0x1"]} Permalink
Record 1182
BCLK Aware Adaptive Voltage Firmware Value
BCLK Aware Adaptive Voltage enable/disable.
Firmware help text BCLK Aware Adaptive Voltage enable/disable. When enabled, pcode will be aware of the BCLK frequency when calculating the CPU V/F curves. This is ideal for BCLK OC to avoid high voltage overrides. Uses OC Mailbox command 0x15.
Opcode OneOf
Question ID 0x429
VarStore CpuSetup
VarStore GUID B08F97FF-E6E8-4193-A997-5E9E9B0ADB32
Offset 0x20d
Width 1 byte(s)
Range 0 to 1 step 0 Visibility / conditions {"condition_id": 435, "type": "SuppressIf", "offset": 367124, "expr": ["EqIdVal QuestionId: 0x27E6, Value: 0x0"]} {"condition_id": 436, "type": "SuppressIf", "offset": 367132, "expr": ["EqIdVal QuestionId: 0x1201, Value: 0x1"]} Permalink
Record 1183
PVD Ratio Threshold Firmware Value
Select PVD Ratio Threshold Value from Range 1 to 40.
Firmware help text Select PVD Ratio Threshold Value from Range 1 to 40. 0 - Auto/HW default
Opcode Numeric
Question ID 0x42a
VarStore CpuSetup
VarStore GUID B08F97FF-E6E8-4193-A997-5E9E9B0ADB32
Offset 0x1dc
Width 1 byte(s)
Range 0 to 40 step 1 Visibility / conditions {"condition_id": 435, "type": "SuppressIf", "offset": 367124, "expr": ["EqIdVal QuestionId: 0x27E6, Value: 0x0"]} {"condition_id": 438, "type": "SuppressIf", "offset": 367222, "expr": ["EqIdVal QuestionId: 0x118C, Value: 0x1", "Not"]} Permalink
Record 1184
FLL Overclock Mode Enable Firmware Value
Enable FLL Overclock Mode, Default is Disable
Opcode OneOf
Question ID 0x42b
VarStore CpuSetup
VarStore GUID B08F97FF-E6E8-4193-A997-5E9E9B0ADB32
Offset 0x352
Width 1 byte(s)
Range 0 to 1 step 0 Visibility / conditions {"condition_id": 435, "type": "SuppressIf", "offset": 367124, "expr": ["EqIdVal QuestionId: 0x27E6, Value: 0x0"]} Permalink
Record 1185
FLL Overclock Mode Select Firmware Value
Select FLL Mode Value from Range 1 to 3.
Firmware help text Select FLL Mode Value from Range 1 to 3. 0x0 = no overclocking, 0x1 = ratio overclocking with nominal (0.5-1x) reference clock frequency, 0x2 = BCLK overclocking with elevated (1-3x) reference clock frequency, 0x3 = BCLK overclocking with extreme elevated (3-5x) reference clock frequency and ratio limited to 63
Opcode Numeric
Question ID 0x42c
VarStore CpuSetup
VarStore GUID B08F97FF-E6E8-4193-A997-5E9E9B0ADB32
Offset 0x353
Width 1 byte(s)
Range 0 to 3 step 1 Visibility / conditions {"condition_id": 435, "type": "SuppressIf", "offset": 367124, "expr": ["EqIdVal QuestionId: 0x27E6, Value: 0x0"]} {"condition_id": 439, "type": "SuppressIf", "offset": 367294, "expr": ["EqIdVal QuestionId: 0x42B, Value: 0x0"]} Permalink
Record 1186
SA PLL Frequency Override Firmware Value
Configure Sa PLL Frequency.
Opcode OneOf
Question ID 0x42d
VarStore CpuSetup
VarStore GUID B08F97FF-E6E8-4193-A997-5E9E9B0ADB32
Offset 0x342
Width 1 byte(s)
Range 0 to 1 step 0 Visibility / conditions {"condition_id": 435, "type": "SuppressIf", "offset": 367124, "expr": ["EqIdVal QuestionId: 0x27E6, Value: 0x0"]} Permalink
Record 1187
BCLK TSC HW Fixup Firmware Value
BCLK TSC HW Fixup disable during TSC copy from PMA to APIC
Opcode OneOf
Question ID 0x42e
VarStore CpuSetup
VarStore GUID B08F97FF-E6E8-4193-A997-5E9E9B0ADB32
Offset 0x344
Width 1 byte(s)
Range 0 to 1 step 0 Visibility / conditions {"condition_id": 435, "type": "SuppressIf", "offset": 367124, "expr": ["EqIdVal QuestionId: 0x27E6, Value: 0x0"]} Permalink
Processor Bus Ratio Override and Bus Speed Override.
Opcode Ref
Question ID 0x42f Visibility / conditions {"condition_id": 440, "type": "SuppressIf", "offset": 367397, "expr": ["EqIdVal QuestionId: 0x27E6, Value: 0x0"]} Permalink
Record 1189
E-core L2 Configurations Menu Link
Efficient-core L2 Bus Ratio Override and Bus Speed Override.
Opcode Ref
Question ID 0x430 Visibility / conditions {"condition_id": 440, "type": "SuppressIf", "offset": 367397, "expr": ["EqIdVal QuestionId: 0x27E6, Value: 0x0"]} {"condition_id": 441, "type": "SuppressIf", "offset": 367420, "expr": ["EqIdVal QuestionId: 0x1260, Value: 0x0", "EqIdVal QuestionId: 0x22E, Value: 0x0", "Or"]} Permalink
Ring Ratio and Voltage Settings
Opcode Ref
Question ID 0x431 Visibility / conditions {"condition_id": 440, "type": "SuppressIf", "offset": 367397, "expr": ["EqIdVal QuestionId: 0x27E6, Value: 0x0"]} Permalink
GT Ratio Override and Delta voltage programming
Opcode Ref
Question ID 0x432 Visibility / conditions {"condition_id": 440, "type": "SuppressIf", "offset": 367397, "expr": ["EqIdVal QuestionId: 0x27E6, Value: 0x0"]} Permalink
Uncore Overclocking Menu
Opcode Ref
Question ID 0x433 Visibility / conditions {"condition_id": 440, "type": "SuppressIf", "offset": 367397, "expr": ["EqIdVal QuestionId: 0x27E6, Value: 0x0"]} Permalink
Record 1193
Voltage PLL Trim Controls Menu Link
Voltage PLL Trim Controls Menu
Opcode Ref
Question ID 0x434 Visibility / conditions {"condition_id": 440, "type": "SuppressIf", "offset": 367397, "expr": ["EqIdVal QuestionId: 0x27E6, Value: 0x0"]} Permalink
Record 1194
Platform Voltage Overrides Menu Link
Platform Voltages related Overclocking Menu
Opcode Ref
Question ID 0x435 Visibility / conditions {"condition_id": 440, "type": "SuppressIf", "offset": 367397, "expr": ["EqIdVal QuestionId: 0x27E6, Value: 0x0"]} {"condition_id": 442, "type": "SuppressIf", "offset": 367515, "expr": ["EqIdVal QuestionId: 0x1201, Value: 0x1"]} Permalink
CEP (Current Excursion Protection) Disable Menu
Opcode Ref
Question ID 0x436 Visibility / conditions {"condition_id": 440, "type": "SuppressIf", "offset": 367397, "expr": ["EqIdVal QuestionId: 0x27E6, Value: 0x0"]} Permalink
Record 1196
VR ICCMAX Current Override Menu Link
VR ICCMAX Current Override Menu
Opcode Ref
Question ID 0x437 Visibility / conditions {"condition_id": 440, "type": "SuppressIf", "offset": 367397, "expr": ["EqIdVal QuestionId: 0x27E6, Value: 0x0"]} Permalink