I'm not with the norm here, to me 1-2°C isn't enough difference to pull my rig apart and buy a new $70 block. Hell, I am still running an apogee GT with a Dtek FuZion v1 still sitting in the box. Many of the reviews i've seen place the Apogee GT near the performance of the V1 FuZion so it just isn't worth it to me.