i9 BIOS
Leo-Patch 1.6 · Q1HY MoDT · Observations 14 October 2026

CPU, Power, Memory

Power Limit 3 Settings

Power Limit 3 Settings firmware setup page decoded from AMI HII/IFR resources.

Form ID
0x2768
Records
6
Path
Setup / Advanced / Power & Performance / CPU - Power Management Control / Power Limit 3 Settings / Setup / Advanced / Advanced / Power & Performance / CPU - Power Management Control / Power Limit 3 Settings

Record 885

Power Limit 3 Override

Firmware Value

Enable/DisablePower Limit 3 override.

Firmware help text

Enable/DisablePower Limit 3 override. If this option is disabled, BIOS will leave the hardware default values for Power Limit 3 and Power Limit 3 Time Window.

Opcode
OneOf
Question ID
0x310
VarStore
CpuSetup
VarStore GUID
B08F97FF-E6E8-4193-A997-5E9E9B0ADB32
Offset
0x22
Width
1 byte(s)
Range
0 to 1 step 0
ValueLabelMarkers
0Disabled
1Enabled

Default store records

Store IDStore labelValueOption label
0Standard0Disabled

Record 886

Power Limit 3

Firmware Value

Power Limit 3 in Milli Watts/Percent.

Firmware help text

Power Limit 3 in Milli Watts/Percent. BIOS will round to the nearest 1/8W when programming. For example, if 12.50W, enter 12500, if 12%, enter 12000, if 50%, enter 50000. XE SKU: Any value can be programmed. Overclocking SKU: Value must be between Max and Min Power Limits (specified by PACKAGE_POWER_SKU_MSR). Other SKUs: This value must be between Min Power Limit and Processor Base Power (TDP) Limit. If the value is 0, BIOS leaves the hardware default value

Opcode
Numeric
Question ID
0x311
VarStore
CpuSetup
VarStore GUID
B08F97FF-E6E8-4193-A997-5E9E9B0ADB32
Offset
0x23
Width
4 byte(s)
Range
0 to 4095875 step 125

Default store records

Store IDStore labelValueOption label
0Standard0

Visibility / conditions

  • {"condition_id": 328, "type": "SuppressIf", "offset": 353852, "expr": ["EqIdVal QuestionId: 0x310, Value: 0x0"]}

Record 887

Power Limit 3 Time Window

Firmware Value

Power Limit 3 Time Window value in Milli seconds.

Firmware help text

Power Limit 3 Time Window value in Milli seconds. The value may vary from 3 to 64(max).Indicates the time window over which Power Limit 3 value should be maintained. If the value is 0, BIOS leaves the hardware default value

Opcode
OneOf
Question ID
0x312
VarStore
CpuSetup
VarStore GUID
B08F97FF-E6E8-4193-A997-5E9E9B0ADB32
Offset
0x27
Width
1 byte(s)
Range
0 to 64 step 0
ValueLabelMarkers
00
33
44
55
66
77
88
1010
1212
1414
1616
2020
2424
2828
3232
4040
4848
5656
6464

Default store records

Store IDStore labelValueOption label
0Standard00

Visibility / conditions

  • {"condition_id": 329, "type": "SuppressIf", "offset": 353899, "expr": ["EqIdVal QuestionId: 0x310, Value: 0x0"]}

Record 888

Power Limit 3 Duty Cycle

Firmware Value

Specify the duty cycle in percentage that the CPU is required to maintain over the configured time window.

Firmware help text

Specify the duty cycle in percentage that the CPU is required to maintain over the configured time window. Range is 0-100.

Opcode
Numeric
Question ID
0x313
VarStore
CpuSetup
VarStore GUID
B08F97FF-E6E8-4193-A997-5E9E9B0ADB32
Offset
0x28
Width
1 byte(s)
Range
0 to 100 step 0

Default store records

Store IDStore labelValueOption label
0Standard0

Visibility / conditions

  • {"condition_id": 330, "type": "SuppressIf", "offset": 354067, "expr": ["EqIdVal QuestionId: 0x310, Value: 0x0"]}

Record 889

Step Down Mode

Firmware Value

Use Step Down Mode to adjust Psys_PL3 aggressiveness.

Firmware help text

Use Step Down Mode to adjust Psys_PL3 aggressiveness. Battery-enabled systems use Standard mode

Opcode
OneOf
Question ID
0x314
VarStore
CpuSetup
VarStore GUID
B08F97FF-E6E8-4193-A997-5E9E9B0ADB32
Offset
0x383
Width
1 byte(s)
Range
0 to 1 step 0
ValueLabelMarkers
0AggressiveStandard defaultManufacturing default
1Standard

Default store records

Store IDStore labelValueOption label
0Standard0Aggressive

Visibility / conditions

  • {"condition_id": 331, "type": "SuppressIf", "offset": 354102, "expr": ["EqIdVal QuestionId: 0x310, Value: 0x0"]}

Record 890

Power Limit 3 Lock

Firmware Value

Power Limit 3 MSR 615h Lock.

Firmware help text

Power Limit 3 MSR 615h Lock. When enabled PL3 configurations are locked during OS. When disabled PL3 configuration can be changed during OS.

Opcode
OneOf
Question ID
0x315
VarStore
CpuSetup
VarStore GUID
B08F97FF-E6E8-4193-A997-5E9E9B0ADB32
Offset
0x29
Width
1 byte(s)
Range
0 to 1 step 0
ValueLabelMarkers
0Disabled
1Enabled

Default store records

Store IDStore labelValueOption label
0Standard0Disabled

Visibility / conditions

  • {"condition_id": 332, "type": "SuppressIf", "offset": 354151, "expr": ["EqIdVal QuestionId: 0x310, Value: 0x0"]}