Wrong temp. reading

[Thermaltake]

Hard drive is WDC WD1002FAEX-00Z3A0 and aida64 latest version. In aida temp is saying  29°C, and in defraggler 21°C thats weird which one is correct ?

[Fiery]

Please post a screen shot of the Storage / SMART page of AIDA64 as well.  There's a chance Defraggler reads temperature from another SMART attribute.

[Thermaltake]

There you go. It's saying 29.

[Fiery]

Thank you.  There's no other temperature reading, so Defraggler must be using a minus 8 Celsius compensation value on the temperature reading.

[Thermaltake]

Okay, thanks for answer.