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

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Smart Fan Function

Smart Fan Function firmware setup page decoded from AMI HII/IFR resources.

Form ID
0x2856
Records
16
Path
Setup / Advanced / Hardware Monitor / Smart Fan Function / Smart Fan Function / Setup / Advanced / Advanced / Hardware Monitor / Smart Fan Function / Smart Fan Function

Record 1631

SYS_FAN3 Mode

Firmware Value

Fan control mode select

Opcode
OneOf
Question ID
0x5d3
VarStore
Setup
VarStore GUID
EC87D643-EBA4-4BB5-A1E5-3F3E36B20DA9
Offset
0xca8
Width
1 byte(s)
Range
0 to 2 step 0
ValueLabelMarkers
0Normal modeStandard default
1Manual mode
2Full On Mode

Record 1632

Fan Monitor Temperature Source Select

Firmware Value

Fan Monitor Temperature Source Select

Opcode
OneOf
Question ID
0x5d4
VarStore
Setup
VarStore GUID
EC87D643-EBA4-4BB5-A1E5-3F3E36B20DA9
Offset
0xcab
Width
1 byte(s)
Range
0 to 1 step 0
ValueLabelMarkers
0CPU TemperatureStandard default
1System Temperature

Visibility / conditions

  • {"condition_id": 690, "type": "SuppressIf", "offset": 386399, "expr": ["EqIdVal QuestionId: 0x5D3, Value: 0x2"]}

Record 1633

Step up time

Firmware Value

The amount of time Fan takes to increase its value by one step.(Units are intervals of 0.1 second)

Opcode
Numeric
Question ID
0x5d5
VarStore
Setup
VarStore GUID
EC87D643-EBA4-4BB5-A1E5-3F3E36B20DA9
Offset
0xca9
Width
1 byte(s)
Range
0 to 255 step 1

Default store records

Store IDStore labelValueOption label
0Standard0

Visibility / conditions

  • {"condition_id": 691, "type": "SuppressIf", "offset": 386442, "expr": ["Uint64 Value: 0x1"]}

Record 1634

Step down time

Firmware Value

The amount of time Fan takes to decrease its value by one step.(Units are intervals of 0.1 second)

Opcode
Numeric
Question ID
0x5d6
VarStore
Setup
VarStore GUID
EC87D643-EBA4-4BB5-A1E5-3F3E36B20DA9
Offset
0xcaa
Width
1 byte(s)
Range
0 to 255 step 1

Default store records

Store IDStore labelValueOption label
0Standard0

Visibility / conditions

  • {"condition_id": 691, "type": "SuppressIf", "offset": 386442, "expr": ["Uint64 Value: 0x1"]}

Record 1635

Temperature 1

Firmware Value

The value of temperature1.

Opcode
Numeric
Question ID
0x5d7
VarStore
Setup
VarStore GUID
EC87D643-EBA4-4BB5-A1E5-3F3E36B20DA9
Offset
0xcba
Width
1 byte(s)
Range
0 to 255 step 1

Default store records

Store IDStore labelValueOption label
0Standard25

Visibility / conditions

  • {"condition_id": 692, "type": "SuppressIf", "offset": 386506, "expr": ["EqIdVal QuestionId: 0x5D3, Value: 0x1", "Not"]}

Record 1636

Temperature 2

Firmware Value

The value of temperature2.

Opcode
Numeric
Question ID
0x5d8
VarStore
Setup
VarStore GUID
EC87D643-EBA4-4BB5-A1E5-3F3E36B20DA9
Offset
0xcbb
Width
1 byte(s)
Range
0 to 255 step 1

Default store records

Store IDStore labelValueOption label
0Standard35

Visibility / conditions

  • {"condition_id": 692, "type": "SuppressIf", "offset": 386506, "expr": ["EqIdVal QuestionId: 0x5D3, Value: 0x1", "Not"]}

Record 1637

Temperature 3

Firmware Value

The value of temperature3.

Opcode
Numeric
Question ID
0x5d9
VarStore
Setup
VarStore GUID
EC87D643-EBA4-4BB5-A1E5-3F3E36B20DA9
Offset
0xcbc
Width
1 byte(s)
Range
0 to 255 step 1

Default store records

Store IDStore labelValueOption label
0Standard45

Visibility / conditions

  • {"condition_id": 692, "type": "SuppressIf", "offset": 386506, "expr": ["EqIdVal QuestionId: 0x5D3, Value: 0x1", "Not"]}

Record 1638

Temperature 4

Firmware Value

The value of temperature4.

Opcode
Numeric
Question ID
0x5da
VarStore
Setup
VarStore GUID
EC87D643-EBA4-4BB5-A1E5-3F3E36B20DA9
Offset
0xcbd
Width
1 byte(s)
Range
0 to 255 step 1

Default store records

Store IDStore labelValueOption label
0Standard55

Visibility / conditions

  • {"condition_id": 692, "type": "SuppressIf", "offset": 386506, "expr": ["EqIdVal QuestionId: 0x5D3, Value: 0x1", "Not"]}

Record 1639

FD/RPM 1

Firmware Value

The value of Fan Duty/RPM when temperature is T1.

Opcode
Numeric
Question ID
0x5db
VarStore
Setup
VarStore GUID
EC87D643-EBA4-4BB5-A1E5-3F3E36B20DA9
Offset
0xcbe
Width
1 byte(s)
Range
0 to 255 step 1

Default store records

Store IDStore labelValueOption label
0Standard140

Visibility / conditions

  • {"condition_id": 692, "type": "SuppressIf", "offset": 386506, "expr": ["EqIdVal QuestionId: 0x5D3, Value: 0x1", "Not"]}

Record 1640

FD/RPM 2

Firmware Value

The value of Fan Duty/RPM when temperature is T2.

Opcode
Numeric
Question ID
0x5dc
VarStore
Setup
VarStore GUID
EC87D643-EBA4-4BB5-A1E5-3F3E36B20DA9
Offset
0xcbf
Width
1 byte(s)
Range
0 to 255 step 1

Default store records

Store IDStore labelValueOption label
0Standard170

Visibility / conditions

  • {"condition_id": 692, "type": "SuppressIf", "offset": 386506, "expr": ["EqIdVal QuestionId: 0x5D3, Value: 0x1", "Not"]}

Record 1641

FD/RPM 3

Firmware Value

The value of Fan Duty/RPM when temperature is T3.

Opcode
Numeric
Question ID
0x5dd
VarStore
Setup
VarStore GUID
EC87D643-EBA4-4BB5-A1E5-3F3E36B20DA9
Offset
0xcc0
Width
1 byte(s)
Range
0 to 255 step 1

Default store records

Store IDStore labelValueOption label
0Standard200

Visibility / conditions

  • {"condition_id": 692, "type": "SuppressIf", "offset": 386506, "expr": ["EqIdVal QuestionId: 0x5D3, Value: 0x1", "Not"]}

Record 1642

FD/RPM 4

Firmware Value

The value of Fan Duty/RPM when temperature is T4.

Opcode
Numeric
Question ID
0x5de
VarStore
Setup
VarStore GUID
EC87D643-EBA4-4BB5-A1E5-3F3E36B20DA9
Offset
0xcc1
Width
1 byte(s)
Range
0 to 255 step 1

Default store records

Store IDStore labelValueOption label
0Standard230

Visibility / conditions

  • {"condition_id": 692, "type": "SuppressIf", "offset": 386506, "expr": ["EqIdVal QuestionId: 0x5D3, Value: 0x1", "Not"]}

Record 1643

Critical temperature

Firmware Value

Fan temperature critical value.

Opcode
Numeric
Question ID
0x5df
VarStore
Setup
VarStore GUID
EC87D643-EBA4-4BB5-A1E5-3F3E36B20DA9
Offset
0xcad
Width
1 byte(s)
Range
0 to 255 step 1

Default store records

Store IDStore labelValueOption label
0Standard60

Visibility / conditions

  • {"condition_id": 692, "type": "SuppressIf", "offset": 386506, "expr": ["EqIdVal QuestionId: 0x5D3, Value: 0x1", "Not"]}

Record 1644

Critical tolerance

Firmware Value

Critical Temperature Tolerance.

Opcode
Numeric
Question ID
0x5e0
VarStore
Setup
VarStore GUID
EC87D643-EBA4-4BB5-A1E5-3F3E36B20DA9
Offset
0xcc5
Width
1 byte(s)
Range
0 to 7 step 1

Default store records

Store IDStore labelValueOption label
0Standard0

Visibility / conditions

  • {"condition_id": 692, "type": "SuppressIf", "offset": 386506, "expr": ["EqIdVal QuestionId: 0x5D3, Value: 0x1", "Not"]}

Record 1645

Enable critical duty

Firmware Value

Enable critical duty, if enable will use critical duty value for fan out.

Firmware help text

Enable critical duty, if enable will use critical duty value for fan out. If not will use full speed for fan out.

Opcode
OneOf
Question ID
0x5e1
VarStore
Setup
VarStore GUID
EC87D643-EBA4-4BB5-A1E5-3F3E36B20DA9
Offset
0xcae
Width
1 byte(s)
Range
0 to 1 step 0
ValueLabelMarkers
0DisabledStandard default
1Enabled

Visibility / conditions

  • {"condition_id": 692, "type": "SuppressIf", "offset": 386506, "expr": ["EqIdVal QuestionId: 0x5D3, Value: 0x1", "Not"]}
  • {"condition_id": 693, "type": "SuppressIf", "offset": 386768, "expr": ["Uint64 Value: 0x1"]}

Record 1646

Critical duty value

Firmware Value

The value for critical duty fan out.

Opcode
Numeric
Question ID
0x5e2
VarStore
Setup
VarStore GUID
EC87D643-EBA4-4BB5-A1E5-3F3E36B20DA9
Offset
0xcaf
Width
1 byte(s)
Range
0 to 127 step 1

Default store records

Store IDStore labelValueOption label
0Standard10

Visibility / conditions

  • {"condition_id": 692, "type": "SuppressIf", "offset": 386506, "expr": ["EqIdVal QuestionId: 0x5D3, Value: 0x1", "Not"]}
  • {"condition_id": 693, "type": "SuppressIf", "offset": 386768, "expr": ["Uint64 Value: 0x1"]}
  • {"condition_id": 694, "type": "SuppressIf", "offset": 386813, "expr": ["EqIdVal QuestionId: 0x5E1, Value: 0x1", "Not"]}