Different temperatures displaying AI Suite 3

[cufukuxa]

Hi,
I run a Asus Z87M-plus with a i7 4790k and I am not sure which AI Suite version to use.
According to ASUS product homepage (which has info from 2015) AI Suite version 1 can be downloaded.
However, there is now a version 3 of AI Suite 3 which I downloaded and it looks to be working fine. It has many more functions than version 1 and one thing I noticed is that the temperature differs.
When I use version 1, the CPU temperature that displays is 35 celcius degrees.
When I use version 3, the CPU temperature that displays is 32 celcius degrees.
Do you guys think that both versions are suitable for my CPU/Motherboard?
Can the reason why I get different temperatures for both versions be that the newer version has settings that make my CPU cooler?

[sticknstone]

The BIOS temps reported are accurate.

The software temps reported will always be off by the same number of degrees.

The component reports a resistance when the software asks for temps.  The component has a thermistor, but the software does not know if the thermistor range is 10k or 15k, thus the difference in reported value of temps.  The software converts the resistance to a temp.