Strange overclocking result

[Crispy]

I got these numbers when overclocking my P4 Northwood 2400mhz (:

FSB: 140mhz

Core voltage: 1.525V

Load temp: ~50C

FSB: 148mhz

Core voltage: 1.550V

Load temp: ~45C

Can anyone explain me why the temperatur i lower at nr.2 !! I really can't see why!!! w00t I have checked the fans aren't working overtime ... Same rpm in both cases ...