Those of you who mine X11 with 1% CPU, which coin are you mining?
I only tried darkcoin with 26% CPU but I think there may be differences between coins.
My cpu is a Phenom X4 970 with 125W, so it is not OK for me unless it is in power saving mode.
I'm mining Hiro and it's a lot less than your's at 26%. Give Hiro a quick go and see if it drops, it might just be DRK (although Hiro works on the DRK kernel so it should be pretty similar)