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
0x2853
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 1583

CPU_FAN Mode

Firmware Value

Fan control mode select

Opcode
OneOf
Question ID
0x5a3
VarStore
Setup
VarStore GUID
EC87D643-EBA4-4BB5-A1E5-3F3E36B20DA9
Offset
0xc4b
Width
1 byte(s)
Range
0 to 2 step 0
ValueLabelMarkers
0Normal modeStandard default
1Manual mode
2Full On Mode

Record 1584

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
0x5a4
VarStore
Setup
VarStore GUID
EC87D643-EBA4-4BB5-A1E5-3F3E36B20DA9
Offset
0xc4c
Width
1 byte(s)
Range
0 to 255 step 1

Default store records

Store IDStore labelValueOption label
0Standard0

Visibility / conditions

  • {"condition_id": 674, "type": "SuppressIf", "offset": 384843, "expr": ["Uint64 Value: 0x1"]}

Record 1585

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
0x5a5
VarStore
Setup
VarStore GUID
EC87D643-EBA4-4BB5-A1E5-3F3E36B20DA9
Offset
0xc4d
Width
1 byte(s)
Range
0 to 255 step 1

Default store records

Store IDStore labelValueOption label
0Standard0

Visibility / conditions

  • {"condition_id": 674, "type": "SuppressIf", "offset": 384843, "expr": ["Uint64 Value: 0x1"]}

Record 1586

Fan Monitor Temperature Source Select

Firmware Value

Fan Monitor Temperature Source Select

Opcode
OneOf
Question ID
0x5a6
VarStore
Setup
VarStore GUID
EC87D643-EBA4-4BB5-A1E5-3F3E36B20DA9
Offset
0xc4e
Width
1 byte(s)
Range
0 to 1 step 0
ValueLabelMarkers
0CPU TemperatureStandard default
1System Temperature

Visibility / conditions

  • {"condition_id": 675, "type": "SuppressIf", "offset": 384907, "expr": ["Uint64 Value: 0x1"]}
  • {"condition_id": 676, "type": "SuppressIf", "offset": 384919, "expr": ["EqIdVal QuestionId: 0x5A3, Value: 0x2"]}

Record 1587

Temperature 1

Firmware Value

The value of temperature1.

Opcode
Numeric
Question ID
0x5a7
VarStore
Setup
VarStore GUID
EC87D643-EBA4-4BB5-A1E5-3F3E36B20DA9
Offset
0xc5d
Width
1 byte(s)
Range
0 to 255 step 1

Default store records

Store IDStore labelValueOption label
0Standard25

Visibility / conditions

  • {"condition_id": 677, "type": "SuppressIf", "offset": 384964, "expr": ["EqIdVal QuestionId: 0x5A3, Value: 0x1", "Not"]}

Record 1588

Temperature 2

Firmware Value

The value of temperature2.

Opcode
Numeric
Question ID
0x5a8
VarStore
Setup
VarStore GUID
EC87D643-EBA4-4BB5-A1E5-3F3E36B20DA9
Offset
0xc5e
Width
1 byte(s)
Range
0 to 255 step 1

Default store records

Store IDStore labelValueOption label
0Standard35

Visibility / conditions

  • {"condition_id": 677, "type": "SuppressIf", "offset": 384964, "expr": ["EqIdVal QuestionId: 0x5A3, Value: 0x1", "Not"]}

Record 1589

Temperature 3

Firmware Value

The value of temperature3.

Opcode
Numeric
Question ID
0x5a9
VarStore
Setup
VarStore GUID
EC87D643-EBA4-4BB5-A1E5-3F3E36B20DA9
Offset
0xc5f
Width
1 byte(s)
Range
0 to 255 step 1

Default store records

Store IDStore labelValueOption label
0Standard45

Visibility / conditions

  • {"condition_id": 677, "type": "SuppressIf", "offset": 384964, "expr": ["EqIdVal QuestionId: 0x5A3, Value: 0x1", "Not"]}

Record 1590

Temperature 4

Firmware Value

The value of temperature4.

Opcode
Numeric
Question ID
0x5aa
VarStore
Setup
VarStore GUID
EC87D643-EBA4-4BB5-A1E5-3F3E36B20DA9
Offset
0xc60
Width
1 byte(s)
Range
0 to 255 step 1

Default store records

Store IDStore labelValueOption label
0Standard55

Visibility / conditions

  • {"condition_id": 677, "type": "SuppressIf", "offset": 384964, "expr": ["EqIdVal QuestionId: 0x5A3, Value: 0x1", "Not"]}

Record 1591

FD/RPM 1

Firmware Value

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

Opcode
Numeric
Question ID
0x5ab
VarStore
Setup
VarStore GUID
EC87D643-EBA4-4BB5-A1E5-3F3E36B20DA9
Offset
0xc61
Width
1 byte(s)
Range
0 to 255 step 1

Default store records

Store IDStore labelValueOption label
0Standard140

Visibility / conditions

  • {"condition_id": 677, "type": "SuppressIf", "offset": 384964, "expr": ["EqIdVal QuestionId: 0x5A3, Value: 0x1", "Not"]}

Record 1592

FD/RPM 2

Firmware Value

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

Opcode
Numeric
Question ID
0x5ac
VarStore
Setup
VarStore GUID
EC87D643-EBA4-4BB5-A1E5-3F3E36B20DA9
Offset
0xc62
Width
1 byte(s)
Range
0 to 255 step 1

Default store records

Store IDStore labelValueOption label
0Standard170

Visibility / conditions

  • {"condition_id": 677, "type": "SuppressIf", "offset": 384964, "expr": ["EqIdVal QuestionId: 0x5A3, Value: 0x1", "Not"]}

Record 1593

FD/RPM 3

Firmware Value

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

Opcode
Numeric
Question ID
0x5ad
VarStore
Setup
VarStore GUID
EC87D643-EBA4-4BB5-A1E5-3F3E36B20DA9
Offset
0xc63
Width
1 byte(s)
Range
0 to 255 step 1

Default store records

Store IDStore labelValueOption label
0Standard200

Visibility / conditions

  • {"condition_id": 677, "type": "SuppressIf", "offset": 384964, "expr": ["EqIdVal QuestionId: 0x5A3, Value: 0x1", "Not"]}

Record 1594

FD/RPM 4

Firmware Value

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

Opcode
Numeric
Question ID
0x5ae
VarStore
Setup
VarStore GUID
EC87D643-EBA4-4BB5-A1E5-3F3E36B20DA9
Offset
0xc64
Width
1 byte(s)
Range
0 to 255 step 1

Default store records

Store IDStore labelValueOption label
0Standard230

Visibility / conditions

  • {"condition_id": 677, "type": "SuppressIf", "offset": 384964, "expr": ["EqIdVal QuestionId: 0x5A3, Value: 0x1", "Not"]}

Record 1595

Critical temperature

Firmware Value

Fan temperature critical value.

Opcode
Numeric
Question ID
0x5af
VarStore
Setup
VarStore GUID
EC87D643-EBA4-4BB5-A1E5-3F3E36B20DA9
Offset
0xc50
Width
1 byte(s)
Range
0 to 255 step 1

Default store records

Store IDStore labelValueOption label
0Standard60

Visibility / conditions

  • {"condition_id": 677, "type": "SuppressIf", "offset": 384964, "expr": ["EqIdVal QuestionId: 0x5A3, Value: 0x1", "Not"]}

Record 1596

Critical tolerance

Firmware Value

Critical Temperature Tolerance.

Opcode
Numeric
Question ID
0x5b0
VarStore
Setup
VarStore GUID
EC87D643-EBA4-4BB5-A1E5-3F3E36B20DA9
Offset
0xc68
Width
1 byte(s)
Range
0 to 7 step 1

Default store records

Store IDStore labelValueOption label
0Standard0

Visibility / conditions

  • {"condition_id": 677, "type": "SuppressIf", "offset": 384964, "expr": ["EqIdVal QuestionId: 0x5A3, Value: 0x1", "Not"]}

Record 1597

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
0x5b1
VarStore
Setup
VarStore GUID
EC87D643-EBA4-4BB5-A1E5-3F3E36B20DA9
Offset
0xc51
Width
1 byte(s)
Range
0 to 1 step 0
ValueLabelMarkers
0DisabledStandard default
1Enabled

Visibility / conditions

  • {"condition_id": 677, "type": "SuppressIf", "offset": 384964, "expr": ["EqIdVal QuestionId: 0x5A3, Value: 0x1", "Not"]}
  • {"condition_id": 678, "type": "SuppressIf", "offset": 385226, "expr": ["Uint64 Value: 0x1"]}

Record 1598

Critical duty value

Firmware Value

The value for critical duty fan out.

Opcode
Numeric
Question ID
0x5b2
VarStore
Setup
VarStore GUID
EC87D643-EBA4-4BB5-A1E5-3F3E36B20DA9
Offset
0xc52
Width
1 byte(s)
Range
0 to 127 step 1

Default store records

Store IDStore labelValueOption label
0Standard10

Visibility / conditions

  • {"condition_id": 677, "type": "SuppressIf", "offset": 384964, "expr": ["EqIdVal QuestionId: 0x5A3, Value: 0x1", "Not"]}
  • {"condition_id": 678, "type": "SuppressIf", "offset": 385226, "expr": ["Uint64 Value: 0x1"]}
  • {"condition_id": 679, "type": "SuppressIf", "offset": 385271, "expr": ["EqIdVal QuestionId: 0x5B1, Value: 0x1", "Not"]}