I'm seeing around 40-50% CPU and around 30-40% GPU usage throughout a 1v1 with a steady 60 fps. I'm running a overclocked i5-3570k and GTX 970 on high settings.
Having not heard many casts before from Fatal, after tonight I must say he rarely ever misses a trick. Even small decisions made by the player that would otherwise be misinterpreted by other casters, he picks up on, combined with good strategic knowledge about the game and generally being a good person to cast alongside. Not to mention all the backbone work he does for TFN and tonight's event. A great guy for the CoH community!
You said it! Though remember he is and always will be swedish, there's no getting around that.