CPU Fan True Value Table (Tj = 100 UMA)

 

CPU Temp (°C)

Fan Speed (rpm)

SPL Spec (dBA)

 

Core 0

 

 

 

 

 

 

 

50

 

2500

28

 

 

 

 

56

 

2900

31

 

 

 

 

63

 

3200

34

 

 

 

 

70

 

3600

37

 

 

 

 

80

 

4000

40

 

 

 

 

95

 

4000

40

 

 

 

 

Throttling 50%: On=95°C, Off=85°C

OS Shutdown: 100°C

H/W Shutdown: 92°C

Fan Acoustic Specifications

Operation

Application

SPL

Loudness (Sone)

Tone

Mode

dBA

(dB)

 

 

 

 

 

 

 

Fan off

Windows Idle (HDD random

N/A

• 20~3.99kHz less than or

7

 

seek)

 

equal to: 0.035

 

 

 

 

• 4K~20kHz less than or

 

 

 

 

equal to: 0.035

 

 

 

 

 

 

Fan 1

Windows Idle

28

N/A

7

 

 

 

 

 

Fan 2

Windows Idle, HDD spinning

31

N/A

7

 

 

 

 

 

Fan 3

Play Movie (read from HDD),

34

N/A

7

 

Play TV (TV tuner sku)

 

 

 

 

 

 

 

 

Fan 4

3DMark06,Prime95,

37

N/A

7

 

Prime95+Play TV(TV tuner

 

 

 

 

sku), acer screen saver, HDD

 

 

 

 

spinning

 

 

 

 

 

 

 

 

Fan 5

TAT100% or

40

N/A

7

 

Thermanow100%,3DMark06,

 

 

 

 

at ambient 35C, HDD

 

 

 

 

spinning

 

 

 

 

 

 

 

 

ODD

ODM’s test software

43

N/A

N/A

(Reference)

(Sequential) with Fan 4

 

 

 

 

 

 

 

 

NOTE: Tone:20~399Hz refers to slope of Ecma-074, 400~20K Hz < 7 Prominence ratio. No pattern occurred on Prominence vs. time diagram.

Chapter 1

15

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Image 25
Acer 5551G, 5251 manual Fan Acoustic Specifications Operation Application, Loudness Sone Tone Mode DBA, Odd