In the end, the AMD E-350 platform saw an average CPU utilization figure of 24.67% when playing a Blu-ray movie, while the Ion-assisted Atom 330 was just 16.78%. That increases to 33.56% if you only measure the Atom’s dual-core performance. We also tested CPU utilization using a 1080p .mkv copy of Avatar (converted from a 1080p Blu-ray source). We saw similar figures, but this time the AMD E-350’s CPU utilization dropped down to 19.55%, which provided consistently smooth playback.