[XS]Just got Phenom II x6 1055T (Retail)

[Opteron146]

It's actually the other way around.

So chips with ultra-low-k will run hotter ?

Replacing the silicon dioxide with a low-κ dielectric of the same thickness reduces parasitic capacitance, enabling faster switching speeds and lower heat dissipation.

http://en.wikipedia.org/wiki/Low-K