Now it is the Samsung NC10 netbook with an Intel Atom N270 CPU, integrated graphics, and an SSD.
In the first Firefox/Office/Nautilus/Idle test, this is the first system where the results are not too shocking. The Ubuntu 11.04 results are not too different from any of the previous releases.
The OpenSSL power results are not shocking either.
There also are not any encryption performance changes for this netbook going back to at least Ubuntu 9.10.