Apple's MacBook Air will soon make the switch to a 45nm Penryn processor, according to CNet. Battery life will be slightly impacted though, noted the source.

The MacBook Air's performance doesn't really compare to that of the rest of the MacBook lineup, but it was designed to be thin and light, not as a gaming rig. Still, adding one of the new Penryn chips to the MacBook Air could help improve performance for things like video playback, noted by some as an issue with the early MacBook Air units.

The problem is the standard Penryn chip consumes more power than the chip currently used inside the MacBook Air. Phone News thinks Apple will compensate for the increased power draw with a larger battery and a more powerful charging adapter.

Engadget points out that Intel will likely have low-voltage and ultra-low voltage Penryn-class chips out fairly soon, in line with Intel's historical product segmentation. That would ease some of the power concerns, although the lower voltage chips have historically underperformed their standard counterparts.