It runs well on all my PCs, which admittedly are all Windows. It's just an SVG+SMIL animation. My opinion is that in 2013, it should run entirely on the GPU.

It runs well on all my PCs, which admittedly are all Windows. It's just an SVG+SMIL animation. My opinion is that in 2013, it should run entirely on the GPU. But I acknowledge that's not the case as much as I think it should be. On my box, it uses ~2.1% CPU and ~16% GPU in Aurora.