ASUS Radeon 6870 1GB running TO HOT in 10.8.3

[Lausannes]

Hello.

 

With 10.8.2 my graphics card were running at around 38-44°C when idle now when I've updated to 10.8.3 it's always at 60°Cwhen I'm idle.

 

The only way from not having these high temperatures is changing the SMBIOS to iMac 12.2 from Mac Pro 3,1.

 

But I don't wan't to use iMac definition as I only get 2 p states with that, 1.60GHz and 3.40GHz.

 

Does anyone know how to solve this problem without having to change SMBIOS?

 

Thanks