Intel has marked the Atom's first anniversary with the launch of two new parts, the Z550 and Z515.

The Z515 runs at up to 1.2GHz and supports Burst Performance Technology, which allows it to adjust the frequency automatically depending on performance demands. It supports US15W and UL11L chipsets and it will primarily be used in MIDs.

The Z550 runs at 2.0GHz, but still stays withing the 3W power envelope. We are not sure if the Z550 will find its place in new products any time soon. When it comes to Atoms, there is usually a hefty price premium to pay for a slightly higher clock, and for example, a 1.8GHz model costs twice as much as the 1.6GHz we see all over the place.

Both chips have a 2.4W TDP, they idle at 0.22W, have 512KB of L2 cache and run on a 533MHz FSB.

More here.