"For testing we used the x86_64 version of Ubuntu 9.04
and Ubuntu 9.10 Alpha 1. The key packages in Karmic Alpha 1 include
the Linux 2.6.30-5 kernel, X Server 1.6.0, Mesa 7.4, and GCC 4.4.1.
These packages are in comparison to the Linux 2.6.28 kernel and GCC
4.3.3 in Ubuntu 9.04. The X.Org and Mesa packages have not yet been
updated but will be in the coming weeks after the Ubuntu Developer
Summit. Ubuntu 9.10 Alpha 1 is also continuing to use the EXT3
file-system by default. Each Ubuntu release was done using a clean
installation and with all stock settings.
"On the hardware side we were running an Intel Core i7 920
processor clocked at 3.60GHz, an ASRock X58 SuperComputer
motherboard, 3GB of CSX DDR3 memory, 320GB Seagate ST3320620AS SATA
2.0 hard drive, and an ATI Radeon HD 4770 graphics card."