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
0x2854
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 1599

SYS_FAN1 Mode

Firmware Value

Fan control mode select

Opcode
OneOf
Question ID
0x5b3
VarStore
Setup
VarStore GUID
EC87D643-EBA4-4BB5-A1E5-3F3E36B20DA9
Offset
0xc6a
Width
1 byte(s)
Range
0 to 2 step 0
ValueLabelMarkers
0Normal modeStandard default
1Manual mode
2Full On Mode

Record 1600

Fan Monitor Temperature Source Select

Firmware Value

Fan Monitor Temperature Source Select

Opcode
OneOf
Question ID
0x5b4
VarStore
Setup
VarStore GUID
EC87D643-EBA4-4BB5-A1E5-3F3E36B20DA9
Offset
0xc6d
Width
1 byte(s)
Range
0 to 1 step 0
ValueLabelMarkers
0CPU TemperatureStandard default
1System Temperature

Visibility / conditions

  • {"condition_id": 680, "type": "SuppressIf", "offset": 385371, "expr": ["EqIdVal QuestionId: 0x5B3, Value: 0x2"]}

Record 1601

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
0x5b5
VarStore
Setup
VarStore GUID
EC87D643-EBA4-4BB5-A1E5-3F3E36B20DA9
Offset
0xc6b
Width
1 byte(s)
Range
0 to 255 step 1

Default store records

Store IDStore labelValueOption label
0Standard0

Visibility / conditions

  • {"condition_id": 681, "type": "SuppressIf", "offset": 385414, "expr": ["Uint64 Value: 0x1"]}

Record 1602

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
0x5b6
VarStore
Setup
VarStore GUID
EC87D643-EBA4-4BB5-A1E5-3F3E36B20DA9
Offset
0xc6c
Width
1 byte(s)
Range
0 to 255 step 1

Default store records

Store IDStore labelValueOption label
0Standard0

Visibility / conditions

  • {"condition_id": 681, "type": "SuppressIf", "offset": 385414, "expr": ["Uint64 Value: 0x1"]}

Record 1603

Temperature 1

Firmware Value

The value of temperature1.

Opcode
Numeric
Question ID
0x5b7
VarStore
Setup
VarStore GUID
EC87D643-EBA4-4BB5-A1E5-3F3E36B20DA9
Offset
0xc7c
Width
1 byte(s)
Range
0 to 255 step 1

Default store records

Store IDStore labelValueOption label
0Standard25

Visibility / conditions

  • {"condition_id": 682, "type": "SuppressIf", "offset": 385478, "expr": ["EqIdVal QuestionId: 0x5B3, Value: 0x1", "Not"]}

Record 1604

Temperature 2

Firmware Value

The value of temperature2.

Opcode
Numeric
Question ID
0x5b8
VarStore
Setup
VarStore GUID
EC87D643-EBA4-4BB5-A1E5-3F3E36B20DA9
Offset
0xc7d
Width
1 byte(s)
Range
0 to 255 step 1

Default store records

Store IDStore labelValueOption label
0Standard35

Visibility / conditions

  • {"condition_id": 682, "type": "SuppressIf", "offset": 385478, "expr": ["EqIdVal QuestionId: 0x5B3, Value: 0x1", "Not"]}

Record 1605

Temperature 3

Firmware Value

The value of temperature3.

Opcode
Numeric
Question ID
0x5b9
VarStore
Setup
VarStore GUID
EC87D643-EBA4-4BB5-A1E5-3F3E36B20DA9
Offset
0xc7e
Width
1 byte(s)
Range
0 to 255 step 1

Default store records

Store IDStore labelValueOption label
0Standard45

Visibility / conditions

  • {"condition_id": 682, "type": "SuppressIf", "offset": 385478, "expr": ["EqIdVal QuestionId: 0x5B3, Value: 0x1", "Not"]}

Record 1606

Temperature 4

Firmware Value

The value of temperature4.

Opcode
Numeric
Question ID
0x5ba
VarStore
Setup
VarStore GUID
EC87D643-EBA4-4BB5-A1E5-3F3E36B20DA9
Offset
0xc7f
Width
1 byte(s)
Range
0 to 255 step 1

Default store records

Store IDStore labelValueOption label
0Standard55

Visibility / conditions

  • {"condition_id": 682, "type": "SuppressIf", "offset": 385478, "expr": ["EqIdVal QuestionId: 0x5B3, Value: 0x1", "Not"]}

Record 1607

FD/RPM 1

Firmware Value

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

Opcode
Numeric
Question ID
0x5bb
VarStore
Setup
VarStore GUID
EC87D643-EBA4-4BB5-A1E5-3F3E36B20DA9
Offset
0xc80
Width
1 byte(s)
Range
0 to 255 step 1

Default store records

Store IDStore labelValueOption label
0Standard140

Visibility / conditions

  • {"condition_id": 682, "type": "SuppressIf", "offset": 385478, "expr": ["EqIdVal QuestionId: 0x5B3, Value: 0x1", "Not"]}

Record 1608

FD/RPM 2

Firmware Value

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

Opcode
Numeric
Question ID
0x5bc
VarStore
Setup
VarStore GUID
EC87D643-EBA4-4BB5-A1E5-3F3E36B20DA9
Offset
0xc81
Width
1 byte(s)
Range
0 to 255 step 1

Default store records

Store IDStore labelValueOption label
0Standard170

Visibility / conditions

  • {"condition_id": 682, "type": "SuppressIf", "offset": 385478, "expr": ["EqIdVal QuestionId: 0x5B3, Value: 0x1", "Not"]}

Record 1609

FD/RPM 3

Firmware Value

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

Opcode
Numeric
Question ID
0x5bd
VarStore
Setup
VarStore GUID
EC87D643-EBA4-4BB5-A1E5-3F3E36B20DA9
Offset
0xc82
Width
1 byte(s)
Range
0 to 255 step 1

Default store records

Store IDStore labelValueOption label
0Standard200

Visibility / conditions

  • {"condition_id": 682, "type": "SuppressIf", "offset": 385478, "expr": ["EqIdVal QuestionId: 0x5B3, Value: 0x1", "Not"]}

Record 1610

FD/RPM 4

Firmware Value

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

Opcode
Numeric
Question ID
0x5be
VarStore
Setup
VarStore GUID
EC87D643-EBA4-4BB5-A1E5-3F3E36B20DA9
Offset
0xc83
Width
1 byte(s)
Range
0 to 255 step 1

Default store records

Store IDStore labelValueOption label
0Standard230

Visibility / conditions

  • {"condition_id": 682, "type": "SuppressIf", "offset": 385478, "expr": ["EqIdVal QuestionId: 0x5B3, Value: 0x1", "Not"]}

Record 1611

Critical temperature

Firmware Value

Fan temperature critical value.

Opcode
Numeric
Question ID
0x5bf
VarStore
Setup
VarStore GUID
EC87D643-EBA4-4BB5-A1E5-3F3E36B20DA9
Offset
0xc6f
Width
1 byte(s)
Range
0 to 255 step 1

Default store records

Store IDStore labelValueOption label
0Standard60

Visibility / conditions

  • {"condition_id": 682, "type": "SuppressIf", "offset": 385478, "expr": ["EqIdVal QuestionId: 0x5B3, Value: 0x1", "Not"]}

Record 1612

Critical tolerance

Firmware Value

Critical Temperature Tolerance.

Opcode
Numeric
Question ID
0x5c0
VarStore
Setup
VarStore GUID
EC87D643-EBA4-4BB5-A1E5-3F3E36B20DA9
Offset
0xc87
Width
1 byte(s)
Range
0 to 7 step 1

Default store records

Store IDStore labelValueOption label
0Standard0

Visibility / conditions

  • {"condition_id": 682, "type": "SuppressIf", "offset": 385478, "expr": ["EqIdVal QuestionId: 0x5B3, Value: 0x1", "Not"]}

Record 1613

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
0x5c1
VarStore
Setup
VarStore GUID
EC87D643-EBA4-4BB5-A1E5-3F3E36B20DA9
Offset
0xc70
Width
1 byte(s)
Range
0 to 1 step 0
ValueLabelMarkers
0DisabledStandard default
1Enabled

Visibility / conditions

  • {"condition_id": 682, "type": "SuppressIf", "offset": 385478, "expr": ["EqIdVal QuestionId: 0x5B3, Value: 0x1", "Not"]}
  • {"condition_id": 683, "type": "SuppressIf", "offset": 385740, "expr": ["Uint64 Value: 0x1"]}

Record 1614

Critical duty value

Firmware Value

The value for critical duty fan out.

Opcode
Numeric
Question ID
0x5c2
VarStore
Setup
VarStore GUID
EC87D643-EBA4-4BB5-A1E5-3F3E36B20DA9
Offset
0xc71
Width
1 byte(s)
Range
0 to 127 step 1

Default store records

Store IDStore labelValueOption label
0Standard10

Visibility / conditions

  • {"condition_id": 682, "type": "SuppressIf", "offset": 385478, "expr": ["EqIdVal QuestionId: 0x5B3, Value: 0x1", "Not"]}
  • {"condition_id": 683, "type": "SuppressIf", "offset": 385740, "expr": ["Uint64 Value: 0x1"]}
  • {"condition_id": 684, "type": "SuppressIf", "offset": 385785, "expr": ["EqIdVal QuestionId: 0x5C1, Value: 0x1", "Not"]}