Ai Suite Vs. Intel Extreme Tunning temps

I use the Ai Suite ii and the Intel Extreme Tuning when i was stress testing my CPU and they both gave me different readings, while the Intel one rose and dipped in temps a bit Asus Suite just stay around 35-36. The problem isn't that i want to know my temps, because i could just use my Intel Tuning to do so, it's that Asus Suite controls my fan curves and if the Temp never changes the fan speeds won't ever change. Is there another program that i could use to change fan curves and that will monitor my CPU temps accurately.

I am using latest bios

P8Z77 V Pro
I7-3770k
Zalman CNPS 14x
Corsair Vengeance 8gb